US4451525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Products having compound membrane
Assignee: NITTOELECTRIC INDUSTRIAL Co Ltd
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Filing: 1981-03-18
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Granted: 1984-05-29
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Expires: 2001-03-18
Abstract
Abstract A product with a compound membrane which comprises a molded substrate, a metal membrane having an average thickness equal to or less than the maximum surface roughness of the molded substrate on the molded substrate and a dielectric membrane having a thickness of 100 Å or more on the metal membrane.
Inventors
- 👤 Shiyouzou Kawazoe
- 👤 Zenichi Ueda
- 👤 Toshihiko Sugimoto
- 👤 Takahiko Moriuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:12
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/70; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/13439; H05; H05B; H05B33/00; H05B33/12; H05B33/26; H05B33/28; H10F77/30; H10F77/707; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522; Y10T428/31551; Y10T428/31605; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
94 words
A product with a compound membrane which comprises a transparent molded substrate having a maximum surface roughness of about 50 to 20,000 Å, a metal membrane having an average thickness of about 50 to 300 Å which is equal to or less than the maximum surface roughness of the molded substrate on said molded substrate and a dielectric membrane having a thickness of 100 to 60,00 Å and having a refractive index of about 1.3 or more for visible light and a visible light transmittance of about 50% or more on said metal membrane.
Claim 2
Dependent Claim
94 words
A product with a compound membrane which comprises a transparent molded substrate having a maximum surface roughness of about 50 to 20,000 Å, a metal membrane having an average thickness of about 50 to 300 Å which is equal to or less than the maximum surface roughness of the molded substrate on said molded substrate and a dielectric membrane having a thickness of 100 to 60,00 Å and having a refractive index of about 1.3 or more for visible light and a visible light transmittance of about 50% or more on said metal membrane.
Claim 3
Dependent Claim
23 words
The product of claim 1, wherein said molded substrate is a sheet, film or other molded shape of glass or a synthetic resin.
Claim 4
Dependent Claim
39 words
The product of claim 1, wherein said metal membrane is a membrane of a metal selected from the group consisting of silver, gold, copper, aluminum, nickel, palladium, tin, iron, cobalt, zinc, silicon, indium, antimony bismuth, platinum, or alloys thereof.
Claim 5
Dependent Claim
15 words
The product of claim 1, wherein said metal membrane is silver, copper, gold or palladium.
Claim 6
Dependent Claim
33 words
The product of claim 1, wherein said dielectric membrane is a membrane of an inorganic metal oxide, a metal sulfide, a metal fluoride, a polyurethane resin, an epoxy resin or an acrylic resin.
Claim 7
Dependent Claim
49 words
The product of claim 1, wherein said dielectric membrane is a membrane of MgF 2 , SiO, SnO x where 1≦×≦2, ZnS, SiO 2 , Si 2 O 3 , Al 2 O 3 , TiO, TiO 2 , Bi 2 O 3 and In 2 O 1-3 .
Claim 8
Dependent Claim
18 words
The product of claim 1, wherein said dielectric membrane has a thickness of about 3,000 Å or less.
Claim 9
Dependent Claim
19 words
The product of claim 1, further including a protective coating layer of a synthetic resin on said dielectric membrane.
Claim 10
Dependent Claim
29 words
The product of claim 1, wherein said dielectric membrane has a refractive index of 1.5 or more for visible light and a visible light transmittance of 70% or more.
Claim 11
Dependent Claim
18 words
The product of claim 1, wherein the dielectric membrane has a thickness of about 1,000 Å or less.
References Cited (Backward Citations)
US4064030A
Cited
US4056654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |