US4452679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substrate with chemically modified surface and method of manufacture thereof
Assignee: Becton Dickinson and Co
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Filing: 1983-08-25
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Granted: 1984-06-05
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Expires: 2003-08-25
Abstract
Abstract A method for providing specific chemical functional groups on a substrate surface is provided. In the method a vaporized material is introduced into a reaction zone to produce a plasma. Selective species of the plasma are prevented from contacting the substrate surface while the remaining species are contacted with the substrate.
Inventors
- 👤 Terry S. Dunn
- 👤 David B. Montgomery
- 👤 Joel L. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:01
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/123; C03; C03C; C03C23/00; C03C23/0005; C03C23/006; C04; C04B; C04B41/00; C04B41/45; C04B41/4505; C04B41/80; C04B41/81; C23; C23C; C23C8/00; C23C8/06; C23C8/36; C30; C30B; C30B33/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
119 words
A method for providing specific chemical functional groups on the surfaces of organic substrates comprising; (a) providing an organic substrate within a reaction zone (b) introducing a vaporized material into said reaction zone, said material being suitable for providing a plasma (c) subjecting said material to plasma producing conditions, whereby the plasma comprises neutral material, positive ions of said material, negative ions of said material, electrons and photons (d) preventing at least one of the components of said plasma from contacting the surface of said organic substrate, (e) contacting the surface of said substrate with the remainder of said components of said plasma, and (f) forming specific functional groups of said material on the surface of said organic substrate.
Claim 2
Independent Claim
119 words
A method for providing specific chemical functional groups on the surfaces of organic substrates comprising; (a) providing an organic substrate within a reaction zone (b) introducing a vaporized material into said reaction zone, said material being suitable for providing a plasma (c) subjecting said material to plasma producing conditions, whereby the plasma comprises neutral material, positive ions of said material, negative ions of said material, electrons and photons (d) preventing at least one of the components of said plasma from contacting the surface of said organic substrate, (e) contacting the surface of said substrate with the remainder of said components of said plasma, and (f) forming specific functional groups of said material on the surface of said organic substrate.
Claim 3
Dependent Claim
16 words
A method in accordance with claim 1 wherein said plasma is produced under electrical discharge conditions.
Claim 4
Dependent Claim
27 words
A method in accordance with claim 1 wherein said vaporized material is selected from the group consisting of oxygen, nitrogen, halogen, sulfur, compounds thereof and mixtures thereof.
Claim 5
Dependent Claim
16 words
A method in accordance with claim 3 wherein said vaporized material is oxygen and compounds thereof.
Claim 6
Dependent Claim
16 words
A method in accordance with claim 3 wherein said vaporized material is nitrogen and compounds thereof.
Claim 7
Dependent Claim
16 words
A method in accordance with claim 3 wherein said vaporized material is halogen and compounds thereof.
Claim 8
Dependent Claim
16 words
A method in accordance with claim 3 wherein said vaporized material is sulfur and compounds thereof.
Claim 9
Independent Claim
120 words
A method for providing specific chemical functional groups on the surfaces of inorganic substrates comprising (a) providing an inorganic substrate within a reaction zone (b) introducing a vaporized material into said reaction zone, said material being suitable for providing a plasma (c) subjecting said material to a plasma producing condition, whereby the plasma comprises neutral material, positive ions of said material, negative ions of said material, electrons and photons (d) preventing at least one of the components of said plasma from contacting the surface of said inorganic substrate, (e) contacting the surface of said substrate with the remainder of said components of said plasma, and (f) forming specific functional groups of said material on the surface of said inorganic substrate.
Claim 10
Independent Claim
120 words
A method for providing specific chemical functional groups on the surfaces of inorganic substrates comprising (a) providing an inorganic substrate within a reaction zone (b) introducing a vaporized material into said reaction zone, said material being suitable for providing a plasma (c) subjecting said material to a plasma producing condition, whereby the plasma comprises neutral material, positive ions of said material, negative ions of said material, electrons and photons (d) preventing at least one of the components of said plasma from contacting the surface of said inorganic substrate, (e) contacting the surface of said substrate with the remainder of said components of said plasma, and (f) forming specific functional groups of said material on the surface of said inorganic substrate.
Claim 11
Dependent Claim
16 words
A method in accordance with claim 8 wherein said plasma is produced under electrical discharge conditions.
Claim 12
Dependent Claim
27 words
A method in accordance with claim 8 wherein said vaporized material is selected from the group consisting of oxygen, nitrogen halogen, sulfur, compounds thereof and mixtures thereof.
Claim 13
Dependent Claim
16 words
A method in accordance with claim 10 wherein said vaporized material is oxygen and compounds thereof.
Claim 14
Dependent Claim
16 words
A method in accordance with claim 10 wherein said vaporized material is nitrogen and compounds thereof.
Claim 15
Dependent Claim
16 words
A method in accordance with claim 10 wherein said vaporized material is halogen and compounds thereof.
Claim 16
Dependent Claim
16 words
A method in accordance with claim 10 wherein said vaporized material is sulfur and compounds thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |