Patent US5298587A successfully refreshed from Google Patents.
US5298587A
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Protective film for articles and method
Assignee: Dow Chemical Co
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Filing: 1992-12-21
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Granted: 1994-03-29
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Expires: 2012-12-21
Abstract
Abstract A method of preparing a coated substrate is disclosed. The substrate is coated with a plasma generated polymer containing Si, O, C and H in specific atom ratio wherein the polymer also contains certain functional groups. A power density of about 10 6 to about 10 8 J/Kg is employed in the plasma polymerization process.
Inventors
- 👤 Ing-Feng Hu
- 👤 James C. Tou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:08
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/44; C23C16/455; C23C16/45561; C23C16/22; C23C16/30; C23C16/40; C23C16/401; C23C16/50; C23C16/517; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
31 words
A composition which comprises a silicon-carbon polymer of SiO 1 .8-2.4 C 0 .3-1.0 and H 0 .7-4.0 containing at least one of the following ##STR3## functional groups and trapped water.
Claim 2
Dependent Claim
31 words
A composition which comprises a silicon-carbon polymer of SiO 1 .8-2.4 C 0 .3-1.0 and H 0 .7-4.0 containing at least one of the following ##STR3## functional groups and trapped water.
Claim 3
Dependent Claim
45 words
A laminate comprising a substrate material having a surface and adhered to the surface a silicon carbon polymer having a composition comprising SiO 1 .8-2.4 C 0 .3-1.0 and H 0 .7-4.0 containing at least one of the following ##STR4## functional groups and trapped water.
Claim 4
Dependent Claim
45 words
A laminate comprising a substrate material having a surface and adhered to the surface a silicon carbon polymer having a composition comprising SiO 1 .8-2.4 C 0 .3-1.0 and H 0 .7-4.0 containing at least one of the following ##STR4## functional groups and trapped water.
Claim 5
Dependent Claim
16 words
The laminate of claim 2 in the form of an optical memory disc, tape or card.
Claim 6
Dependent Claim
12 words
The laminate of claim 2 in the form of an optical lens.
Claim 7
Dependent Claim
20 words
The laminate of claim 2 wherein the silicon carbon-composition has a thickness ranging from about 2 to about 8 microns.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-03-28 | 1997-09-27 | 1998-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-28 | 2001-09-27 | 2002-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-28 | 2005-09-27 | 2006-03-29 | $7700.00 | Window Closed / Lapsed |