Patent US5618619A successfully refreshed from Google Patents.
US5618619A
Expired / Lapsed
US
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Highly abrasion-resistant, flexible coatings for soft substrates
Assignee: Morgan Advanced Ceramics Inc
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Filing: 1994-03-03
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Granted: 1997-04-08
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Expires: 2014-03-03
Abstract
Abstract An abrasion wear resistant coated substrate product is described comprising a substrate and an abrasion wear resistant coating material comprising carbon, hydrogen, silicon, and oxygen. The abrasion wear resistant coating material has the properties of Nanoindentation hardness in the range of about 2 to about 5 GPa and a strain to microcracking greater than about 1% and a transparency greater than 85% in the visible spectrum. The coated products of the present invention are suitable for use in optical applications such as ophthalmic lenses or laser bar code scanner windows. In the method for making the products, the substrate is first chemically cleaned to remove contaminants. In the second step, the substrate is inserted into a vacuum chamber, and the air in said chamber is evacuated. In the third step, the substrate surface is bombarded with energetic ions and/or reactive species to assist in the removal of residual hydrocarbons and surface oxides, and to activate the surface. After the substrate surface has been etched, a protective, abrasion-resistant coating is deposited by plasma or ion beam deposition. Once the chosen thickness of the coating has been achieved, the deposition process on the substrates is terminated, the vacuum chamber pressure is increased to atmospheric pressure, and the coated substrate products having improved abrasion-resistance are removed from the vacuum chamber.
Inventors
- 👤 Rudolph H. Petrmichl
- 👤 Bradley J. Knapp
- 👤 Fred M. Kimock
- 👤 Brian K. Daniels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:03
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/123; B; B05; B05D; B05D1/00; B05D1/62; C23; C23C; C23C16/00; C23C16/02; C23C16/0227; C23C16/0245; C23C16/22; C23C16/30; C23C16/44; C23C16/50; C23C16/513; G02B1/105; G; G02; G02B; G02B1/00; G02B1/10; G02B1/11; G02B1/111; G02B1/14; B29; B29C; B29C59/00; B29C59/16; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31507; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 96
Claim 1
Independent Claim
89 words
An abrasion wear resistant coated substrate product comprising a substrate and at least one layer of an abrasion wear resistant coating material comprised of carbon, hydrogen, silicon, and oxygen, using ion-assisted plasma deposition and using mixtures of organosiloxane or organosilazane precursor gases and oxygen; said abrasion wear resistant coating material having the properties of Nanoindentation hardness in the range of about 2 to about 5 GPa, a strain to microcracking of about 2% to about 3%, and an abrasion resistance at least equal to the abrasion resistance of glass.
Claim 2
Dependent Claim
89 words
An abrasion wear resistant coated substrate product comprising a substrate and at least one layer of an abrasion wear resistant coating material comprised of carbon, hydrogen, silicon, and oxygen, using ion-assisted plasma deposition and using mixtures of organosiloxane or organosilazane precursor gases and oxygen; said abrasion wear resistant coating material having the properties of Nanoindentation hardness in the range of about 2 to about 5 GPa, a strain to microcracking of about 2% to about 3%, and an abrasion resistance at least equal to the abrasion resistance of glass.
Claim 3
Dependent Claim
22 words
The product of claim 1 wherein said abrasion wear resistant coating material has a transparency greater than 85% in the visible spectrum.
Claim 4
Dependent Claim
34 words
The product of claim 1 wherein said abrasion wear resistant coating material undergoes a change in haze of less than 2% as measured by ASTM D1003 during Taber abrasion as described in ASTM D1044.
Claim 5
Dependent Claim
26 words
The product of claim 1 wherein the thickness of the abrasion wear resistant coating is in the range of approximately 1 μm to approximately 100 μm.
Claim 6
Dependent Claim
15 words
The product of claim 1 wherein the coated substrate product is a vision-correcting ophthalmic lens.
Claim 7
Dependent Claim
26 words
The product of claim 5 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 8
Dependent Claim
14 words
The product of claim 1 wherein the coated substrate product is a plano lens.
Claim 9
Dependent Claim
26 words
The product of claim 7 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 10
Dependent Claim
14 words
The product of claim 1 wherein the coated substrate product is a sunglass lens.
Claim 11
Dependent Claim
26 words
The product of claim 9 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 12
Dependent Claim
14 words
The product of claim 1 wherein the coated substrate product is a safety lens.
Claim 13
Dependent Claim
26 words
The product of claim 11 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 14
Dependent Claim
16 words
The product of claim 1 wherein the coated substrate product is a bar code scanner window.
Claim 15
Dependent Claim
26 words
The product of claim 13 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 16
Dependent Claim
31 words
The product of claim 1 wherein said substrate is a polymer, and said coated substrate product further comprises an adhesion-enhancing polymer layer between said substrate and said abrasion wear resistant coating.
Claim 17
Dependent Claim
26 words
The product of claim 15 wherein said polymer substrate is selected from the group consisting of polymethylmethacrylate, polycarbonate, acrylics, poly(allyl diglycolcarbonate), and co-polymers and blends thereof.
Claim 18
Dependent Claim
24 words
The product of claim 16 wherein said adhesion-enhancing polymer layer is selected from the group consisting of an acrylic polymer and a polysiloxane polymer.
Claim 19
Dependent Claim
16 words
The product of claim 15 wherein said adhesion-enhancing polymer layer is less than 10 μm thick.
Claim 20
Dependent Claim
26 words
The product of claim 15 wherein the thickness of said abrasion wear resistant coating is in the range of approximately 1 μm to approximately 100 μm.
Claim 21
Dependent Claim
15 words
The product of claim 15 wherein said coated substrate product is a vision-correcting ophthalmic lens.
Claim 22
Dependent Claim
26 words
The product of claim 20 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 23
Dependent Claim
14 words
The product of claim 15 wherein said coated substrate product is a plano lens.
Claim 24
Dependent Claim
26 words
The product of claim 22 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 25
Dependent Claim
14 words
The product of claim 15 wherein said coated substrate product is a sunglass lens.
Claim 26
Dependent Claim
26 words
The product of claim 24 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 27
Dependent Claim
14 words
The product of claim 15 wherein said coated substrate product is a safety lens.
Claim 28
Dependent Claim
26 words
The product of claim 26 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 29
Dependent Claim
16 words
The product of claim 15 wherein said coated substrate product is a bar code scanner window.
Claim 30
Dependent Claim
26 words
The product of claim 28 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 31
Dependent Claim
12 words
The product of claim 1 wherein said abrasion-resistant material also contains nitrogen.
Claim 32
Dependent Claim
113 words
An optically transparent, abrasion wear resistant coated substrate product comprising a substrate and at least one layer of an abrasion wear resistant coating material comprised of carbon, hydrogen, silicon, and oxygen, using ion-assisted plasma deposition, and mixtures of organosiloxane or organosilazane precursor gases and oxygen; said abrasion wear resistant coating material having the properties of Nanoindentation hardness in the range of about 2 to about 5 GPa, a strain to microcracking of about 2% to about 3%, a transparency greater than 85% throughout the visible spectrum, a yellow index of less than 5, a haze of less than 2%, and an abrasion resistance of at least equal to the abrasion resistance of glass.
Claim 33
Dependent Claim
113 words
An optically transparent, abrasion wear resistant coated substrate product comprising a substrate and at least one layer of an abrasion wear resistant coating material comprised of carbon, hydrogen, silicon, and oxygen, using ion-assisted plasma deposition, and mixtures of organosiloxane or organosilazane precursor gases and oxygen; said abrasion wear resistant coating material having the properties of Nanoindentation hardness in the range of about 2 to about 5 GPa, a strain to microcracking of about 2% to about 3%, a transparency greater than 85% throughout the visible spectrum, a yellow index of less than 5, a haze of less than 2%, and an abrasion resistance of at least equal to the abrasion resistance of glass.
Claim 34
Dependent Claim
34 words
The product of claim 31 wherein said abrasion wear resistant coating material undergoes a change in haze of less than 2% as measured by ASTM D1003 during Taber abrasion as described in ASTM D1044.
Claim 35
Dependent Claim
15 words
The product of claim 31 wherein said abrasion wear resistant coating material also contains nitrogen.
Claim 36
Dependent Claim
26 words
The product of claim 31 wherein the thickness of the abrasion wear resistant coating is in the range of approximately 1 μm to approximately 100 μm.
Claim 37
Dependent Claim
15 words
The product of claim 31 wherein the coated substrate product is a vision-correcting ophthalmic lens.
Claim 38
Dependent Claim
26 words
The product of claim 35 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 39
Dependent Claim
14 words
The product of claim 31 wherein the coated substrate product is a plano lens.
Claim 40
Dependent Claim
26 words
The product of claim 37 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 41
Dependent Claim
14 words
The product of claim 31 wherein the coated substrate product is a sunglass lens.
Claim 42
Dependent Claim
26 words
The product of claim 39 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 43
Dependent Claim
14 words
The product of claim 31 wherein the coated substrate product is a safety lens.
Claim 44
Dependent Claim
26 words
The product of claim 41 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 45
Dependent Claim
16 words
The product of claim 31 wherein the coated substrate product is a bar code scanner window.
Claim 46
Dependent Claim
26 words
The product of claim 43 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 47
Dependent Claim
31 words
The product of claim 31 wherein said substrate is a polymer, and said coated substrate product further comprises an adhesion-enhancing polymer layer between said substrate and said abrasion wear resistant coating.
Claim 48
Dependent Claim
26 words
The product of claim 45 wherein said polymer substrate is selected from the group consisting of polymethylmethacrylate, polycarbonate, acrylics, poly(allyl diglycolcarbonate), and co-polymers and blends thereof.
Claim 49
Dependent Claim
24 words
The product of claim 45 wherein said adhesion-enhancing polymer layer is selected from the group consisting of an acrylic polymer and a polysiloxane polymer.
Claim 50
Dependent Claim
16 words
The product of claim 45 wherein said adhesion-enhancing polymer layer is less than 10 μm thick.
Claim 51
Dependent Claim
26 words
The product of claim 45 wherein the thickness of said abrasion wear resistant coating is in the range of approximately 1 μm to approximately 100 μm.
Claim 52
Dependent Claim
15 words
The product of claim 45 wherein said coated substrate product is a vision-correcting ophthalmic lens.
Claim 53
Dependent Claim
26 words
The product of claim 50 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 54
Dependent Claim
14 words
The product of claim 45 wherein said coated substrate product is a plano lens.
Claim 55
Dependent Claim
26 words
The product of claim 52 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 56
Dependent Claim
14 words
The product of claim 45 wherein said coated substrate product is a sunglass lens.
Claim 57
Dependent Claim
26 words
The product of claim 54 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 58
Dependent Claim
14 words
The product of claim 45 wherein said coated substrate product is a safety lens.
Claim 59
Dependent Claim
26 words
The product of claim 56 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 60
Dependent Claim
16 words
The product of claim 45 wherein said coated substrate product is a bar code scanner window.
Claim 61
Dependent Claim
26 words
The product of claim 58 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 62
Dependent Claim
92 words
An abrasion wear resistant coated substrate product comprising a substrate and an abrasion wear resistant coating material comprised of carbon, hydrogen, silicon, and oxygen, using ion-assisted plasma deposition and using mixtures of organosiloxane or organosilazane precursor gases and oxygen; said abrasion wear resistant coating material having the properties of Nanoindentation hardness in the range of about 2 to about 5 GPa, a strain to microcracking of about 2% to about 3%, and an abrasion resistance of at least equal to the abrasion resistance of glass; and an outer layer of diamond-like carbon.
Claim 63
Dependent Claim
92 words
An abrasion wear resistant coated substrate product comprising a substrate and an abrasion wear resistant coating material comprised of carbon, hydrogen, silicon, and oxygen, using ion-assisted plasma deposition and using mixtures of organosiloxane or organosilazane precursor gases and oxygen; said abrasion wear resistant coating material having the properties of Nanoindentation hardness in the range of about 2 to about 5 GPa, a strain to microcracking of about 2% to about 3%, and an abrasion resistance of at least equal to the abrasion resistance of glass; and an outer layer of diamond-like carbon.
Claim 64
Dependent Claim
19 words
The product of claim 60 wherein said diamond-like carbon layer has a thickness between 50 Å and 10 microns.
Claim 65
Dependent Claim
34 words
The product of claim 60 wherein said abrasion wear resistant coating material undergoes a change in haze of less than 2% as measured by ASTM D1003 during Taber abrasion as described in ASTM D1044.
Claim 66
Dependent Claim
15 words
The product of claim 60 wherein said abrasion wear resistant coating material also contains nitrogen.
Claim 67
Dependent Claim
26 words
The product of claim 60 wherein the thickness of the abrasion wear resistant coating is in the range of approximately 1 μm to approximately 100 μm.
Claim 68
Dependent Claim
16 words
The product of claim 60 wherein the coated substrate product is a vision-correcting optical ophthalmic lens.
Claim 69
Dependent Claim
26 words
The product of claim 65 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 70
Dependent Claim
14 words
The product of claim 60 wherein the coated substrate product is a plano lens.
Claim 71
Dependent Claim
26 words
The product of claim 67 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 72
Dependent Claim
14 words
The product of claim 60 wherein the coated substrate product is a sunglass lens.
Claim 73
Dependent Claim
26 words
The product of claim 69 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 74
Dependent Claim
14 words
The product of claim 60 wherein the coated substrate product is a safety lens.
Claim 75
Dependent Claim
26 words
The product of claim 71 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 76
Dependent Claim
16 words
The product of claim 60 wherein the coated substrate product is a bar code scanner window.
Claim 77
Dependent Claim
26 words
The product of claim 73 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 78
Dependent Claim
31 words
The product of claim 60 wherein said substrate is a polymer, and said coated substrate product further comprises an adhesion-enhancing polymer layer between said substrate and said abrasion wear resistant coating.
Claim 79
Dependent Claim
26 words
The product of claim 75 wherein said polymer substrate is selected from the group consisting of polymethylmethacrylate, polycarbonate, acrylics, poly(allyl diglycolcarbonate), and co-polymers and blends thereof.
Claim 80
Dependent Claim
25 words
The product of claim 75 wherein said adhesion-enhancing polymer layer is selected from the from the group consisting of an acrylic and polysiloxane polymer material.
Claim 81
Dependent Claim
16 words
The product of claim 75 wherein said adhesion-enhancing polymer layer is less than 10 μm thick.
Claim 82
Dependent Claim
26 words
The product of claim 75 wherein the thickness of said abrasion wear resistant coating is in the range of approximately 1 μm to approximately 100 μm.
Claim 83
Dependent Claim
15 words
The product of claim 75 wherein said coated substrate product is a vision-correcting ophthalmic lens.
Claim 84
Dependent Claim
26 words
The product of claim 80 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 85
Dependent Claim
14 words
The product of claim 75 wherein said coated substrate product is a plano lens.
Claim 86
Dependent Claim
26 words
The product of claim 82 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 87
Dependent Claim
14 words
The product of claim 75 wherein said coated substrate product is a sunglass lens.
Claim 88
Dependent Claim
26 words
The product of claim 84 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 89
Dependent Claim
14 words
The product of claim 75 wherein said coated substrate product is a safety lens.
Claim 90
Dependent Claim
26 words
The product of claim 86 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 91
Dependent Claim
16 words
The product of claim 75 wherein said coated substrate product is a bar code scanner window.
Claim 92
Dependent Claim
26 words
The product of claim 88 wherein said wear resistant coating includes multiple layers of at least two different refractive indices to reduce reflection at predetermined wavelengths.
Claim 93
Dependent Claim
225 words
A product of a method for depositing onto a substrate an abrasion wear resistant coating material consisting of C, H, Si and O which comprises: (a) chemically cleaning the surface of said substrate to remove contaminants; (b) mounting said substrate in a deposition vacuum chamber and evacuating the air from said chamber; (c) etching the surface of said substrate with a material selected from the group consisting of energetic ions, reactive species and mixtures thereof to further remove residual contaminants, and to activate the surface; (d) depositing onto the surface of said substrate an intermediate layer of said abrasion wear resistant material by exposing said substrate to a deposition flux of oxygen and organosiloxane or organosilazane precursor gases and generated by a plasma, whereby said deposition flux is activated by said plasma and said substrate is bombarded by energetic ions during the deposition; (e) depositing onto said intermediate layer an outer layer of diamond-like carbon having a thickness between 50 Å and 100 microns; (f) increasing the vacuum chamber pressure to atmospheric pressure; and (g) recovering a product coated with said abrasion wear resistant material having the properties of Nanoindentation hardness in the range of about 2 to about 5 GPa, a strain to microcracking of about 2% to about 3%, and an abrasion resistance of at least equal to the abrasion resistance of glass.
Claim 94
Dependent Claim
225 words
A product of a method for depositing onto a substrate an abrasion wear resistant coating material consisting of C, H, Si and O which comprises: (a) chemically cleaning the surface of said substrate to remove contaminants; (b) mounting said substrate in a deposition vacuum chamber and evacuating the air from said chamber; (c) etching the surface of said substrate with a material selected from the group consisting of energetic ions, reactive species and mixtures thereof to further remove residual contaminants, and to activate the surface; (d) depositing onto the surface of said substrate an intermediate layer of said abrasion wear resistant material by exposing said substrate to a deposition flux of oxygen and organosiloxane or organosilazane precursor gases and generated by a plasma, whereby said deposition flux is activated by said plasma and said substrate is bombarded by energetic ions during the deposition; (e) depositing onto said intermediate layer an outer layer of diamond-like carbon having a thickness between 50 Å and 100 microns; (f) increasing the vacuum chamber pressure to atmospheric pressure; and (g) recovering a product coated with said abrasion wear resistant material having the properties of Nanoindentation hardness in the range of about 2 to about 5 GPa, a strain to microcracking of about 2% to about 3%, and an abrasion resistance of at least equal to the abrasion resistance of glass.
Claim 95
Dependent Claim
204 words
A product of a method for depositing onto a substrate an abrasion wear resistant coating material consisting of C, H, Si and O which comprises: (a) chemically cleaning the surface of said substrate to remove contaminants; (b) mounting said substrate in a deposition vacuum chamber and evacuating the air from said chamber; (c) etching the surface of said substrate with a material selected from the group consisting of energetic ions, reactive species and mixtures thereof to further remove residual contaminants, and to activate the surface; (d) depositing onto the surface of said substrate an intermediate layer of said abrasion wear resistant material by exposing said substrate to a deposition flux of oxygen and organosiloxane or organosilazane precursor gases and generated by a plasma, whereby said deposition flux is activated by said plasma and said substrate is bombarded by energetic ions during the deposition; (e) increasing the vacuum chamber pressure to atmospheric pressure; and (f) recovering a product coated with said abrasion wear resistant material having the properties of Nanoindentation hardness in the range of about 2 to about 5 GPa, a strain to microcracking of about 2% to about 3%, and an abrasion resistance of at least equal to the abrasion resistance of glass.
Claim 96
Dependent Claim
204 words
A product of a method for depositing onto a substrate an abrasion wear resistant coating material consisting of C, H, Si and O which comprises: (a) chemically cleaning the surface of said substrate to remove contaminants; (b) mounting said substrate in a deposition vacuum chamber and evacuating the air from said chamber; (c) etching the surface of said substrate with a material selected from the group consisting of energetic ions, reactive species and mixtures thereof to further remove residual contaminants, and to activate the surface; (d) depositing onto the surface of said substrate an intermediate layer of said abrasion wear resistant material by exposing said substrate to a deposition flux of oxygen and organosiloxane or organosilazane precursor gases and generated by a plasma, whereby said deposition flux is activated by said plasma and said substrate is bombarded by energetic ions during the deposition; (e) increasing the vacuum chamber pressure to atmospheric pressure; and (f) recovering a product coated with said abrasion wear resistant material having the properties of Nanoindentation hardness in the range of about 2 to about 5 GPa, a strain to microcracking of about 2% to about 3%, and an abrasion resistance of at least equal to the abrasion resistance of glass.
References Cited (Backward Citations)
US3847652A
Cited
US4085248A
Cited
US4382100A
Cited
US4096315A
Cited
US4168330A
Cited
US4217038A
Cited
US4661409A
Cited
US4830873A
Cited
US4649071A
Cited
US4490229A
Cited
US5093153A
Cited
US5061567A
Cited
US4778721A
Cited
US4762730A
Cited
US4862032A
Cited
US4777090A
Cited
US4842941A
Cited
EP0299754A2
Cited
US5051308A
Cited
US4927704A
Cited
US4783374A
Cited
US4990376A
Cited
US4942065A
Cited
EP0395198A2
Cited
US5135808A
Cited
US5268217A
Cited
US5190807A
Cited
EP0528540A2
Cited
US5508368A
Cited
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| 3.5 Years (Year 4) | 2000-04-07 | 2000-10-07 | 2001-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-07 | 2004-10-07 | 2005-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-07 | 2008-10-07 | 2009-04-08 | $7700.00 | Window Closed / Lapsed |