US5635240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic coating materials using mixed polymers
Assignee: Dow Silicones Corp
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Filing: 1995-06-19
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Granted: 1997-06-03
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Expires: 2015-06-19
Abstract
Abstract The present invention relates to a method of forming coatings on electronic substrates and the substrates coated thereby. The method comprises applying a coating comprising hydrogen silsesquioxane resin and a polysilazane on a substrate and heating the coated substrate at a temperature sufficient to convert the resins to ceramics.
Inventors
- 👤 Loren A. Haluska
- 👤 Keith W. Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:36
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/60; H10P14/69; H10P14/692; H10P14/6921; H10P14/6922; H10P14/6925; C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/5025; C04B41/5035; C04B41/80; C04B41/81; C04B41/85; C04B41/87; H10P14/65; H10P14/6516; H10P14/6529; H10P14/6532; H10P14/6544; H10W; H10W74/00; H10W74/40; H10W74/43; H10W74/47; H10W74/473; C04B2111/00; C04B2111/00474; C04B2111/00844; H10P14/63; H10P14/6326; H10P14/6342; H10P14/66; H10P14/668; H10P14/6681; H10P14/6687; H10P14/6689; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12931; Y10T428/25
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
59 words
A method of forming a coating on an electronic substrate comprising: applying a coating composition comprising between about 10 and about 90 wt. % hydrogen silsesquioxane resin and between about 90 and about 10 wt. % polysilazane onto an electronic substrate; and heating the coated substrate at a temperature sufficient to convert the coating composition into a ceramic coating.
Claim 2
Independent Claim
59 words
A method of forming a coating on an electronic substrate comprising: applying a coating composition comprising between about 10 and about 90 wt. % hydrogen silsesquioxane resin and between about 90 and about 10 wt. % polysilazane onto an electronic substrate; and heating the coated substrate at a temperature sufficient to convert the coating composition into a ceramic coating.
Claim 3
Dependent Claim
26 words
The method of claim 1 wherein the coated substrate is heated at a temperature in the range of between about 50° C. and about 800° C.
Claim 4
Dependent Claim
41 words
The method of claim 1 wherein the coated substrate is heated in an environment Containing a gas selected from the group consisting of air, O 2 , oxygen plasma, an inert gas, ammonia, amines, moisture, H 2 and N 2 O.
Claim 5
Dependent Claim
42 words
The method of claim 1 wherein the coating composition also contains a platinum, rhodium or copper catalyst in an amount of between about 5 and about 500 ppm platinum, rhodium or copper based on the weight of hydrogen silsesquioxane resin and polysilazane.
Claim 6
Dependent Claim
13 words
The method of claim 1 wherein the coating composition also contains a filler.
Claim 7
Dependent Claim
23 words
The method of claim 5 wherein the coating composition also contains a material which modifies the surface of the filler for better adhesion.
Claim 8
Dependent Claim
24 words
The method of claim 5 wherein the filler is in a form selected from the group consisting of powders, particles, flakes, filaments and microballoons.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-06-02 | 2000-12-02 | 2001-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-02 | 2004-12-02 | 2005-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-02 | 2008-12-02 | 2009-06-03 | $7700.00 | Window Closed / Lapsed |