Patent US5266073A successfully refreshed from Google Patents.
US3002848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of selectively coating surfaces
Assignee: Dow Silicones Corp
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Filing: 1960-02-04
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Granted: 1961-10-03
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Expires: 1980-02-04
Abstract
No abstract record available.
Inventors
- 👤 Harold A Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:44
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A METHOD OF SELECTIVELY COATING A SOLID SURFACE WITH AN ORGANOPOLYSILOXANE RESIN WHICH COMPRISES (1) APPLY ING A COATING OF UNCURED SILOXANE RESIN TO SAID SURFACE, (2) PLACING A COATING HAVING AN ACID NUMBER OF AT LEAST 1 AND CONSISTING ESSENTIALLY OF A NON-VOLATILE CARBOXYLIC ACID, AGAINST THAT PORTION OF THE SILOXANE RESIN COATING WHICH IT IS DESIRED TO REMOVE FROM SAID SURFACE, (3) HEATING THE COATED SURFACE AT A TEMPERATURE BELOW THE DECOMPOSITION TEMPERATURE OF THE CARBOXYLIC ACID TO CURE THAT PORTION OF THE SILOXANE RESIN COATING NOT IN CONTACT WITH THE ACID COATING AND (4) REMOVING THE UNCURED SILOXANE RESIN AND ANY ADHERING CARBOXYLIC ACID COATING FROM SAID SURFACE WITH AN ALCOHOL SOLVENT WHEREBY THE CURED SILICONE COATING REMAINS ON THE DESIRED PARTS OF SAID SURFACE, SAID SILOXANE RESIN CONSISTING ESSENTIALLY OF A MONOVALENT HYDROCARBON SUBSTITUTED POLYSILOXANE IN WHICH THERE IS AN AVERAGE OF FROM 1 TO 1.7 MONOVALENT HYDROCARBON GROUPS PER SILICON, SAID SILOXANE CONTAINING A CURING CATALYST SELECTED FROM THE GROUP CONSISTING OF QUATERNARY AMMONIUM SALT OF CARBOXYLIC ACIDS, QUATERNARY AMMONIUM HYDROXIDES AND QUATERNARY AMMONIUM ALKOXIDES.
Claim 2
Independent Claim
180 words
A METHOD OF SELECTIVELY COATING A SOLID SURFACE WITH AN ORGANOPOLYSILOXANE RESIN WHICH COMPRISES (1) APPLY ING A COATING OF UNCURED SILOXANE RESIN TO SAID SURFACE, (2) PLACING A COATING HAVING AN ACID NUMBER OF AT LEAST 1 AND CONSISTING ESSENTIALLY OF A NON-VOLATILE CARBOXYLIC ACID, AGAINST THAT PORTION OF THE SILOXANE RESIN COATING WHICH IT IS DESIRED TO REMOVE FROM SAID SURFACE, (3) HEATING THE COATED SURFACE AT A TEMPERATURE BELOW THE DECOMPOSITION TEMPERATURE OF THE CARBOXYLIC ACID TO CURE THAT PORTION OF THE SILOXANE RESIN COATING NOT IN CONTACT WITH THE ACID COATING AND (4) REMOVING THE UNCURED SILOXANE RESIN AND ANY ADHERING CARBOXYLIC ACID COATING FROM SAID SURFACE WITH AN ALCOHOL SOLVENT WHEREBY THE CURED SILICONE COATING REMAINS ON THE DESIRED PARTS OF SAID SURFACE, SAID SILOXANE RESIN CONSISTING ESSENTIALLY OF A MONOVALENT HYDROCARBON SUBSTITUTED POLYSILOXANE IN WHICH THERE IS AN AVERAGE OF FROM 1 TO 1.7 MONOVALENT HYDROCARBON GROUPS PER SILICON, SAID SILOXANE CONTAINING A CURING CATALYST SELECTED FROM THE GROUP CONSISTING OF QUATERNARY AMMONIUM SALT OF CARBOXYLIC ACIDS, QUATERNARY AMMONIUM HYDROXIDES AND QUATERNARY AMMONIUM ALKOXIDES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-02 | 1965-04-03 | 1965-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-02 | 1969-04-03 | 1969-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-02 | 1973-04-03 | 1973-10-03 | $7700.00 | Window Closed / Lapsed |