US3385919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of using a release composition in the formation of cement articles
Assignee: Monolith Portland Cement Co
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Filing: 1963-10-21
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Granted: 1968-05-28
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Expires: 1983-10-21
Abstract
No abstract record available.
Inventors
- 👤 Gerald M Spence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:10
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A METHOD OF FORMING AN ARTICLE FROM A CEMENT, WATER CONTAINING COMPOSITION AGAINST A SURFACE SO THAT SUCH ARTICLE IS RELEASED FROM SAID SURFACE WHICH METHOD COMPRISES: COATING A SURFACE WITH WATER SOLUBLE FILM CONTAINING METAL PARTICLES CAPABLE OF REACTING WITH AN AQUEOUS CAUSTIC SOLUTION SO AS TO FORM A GAS SO THAT SAID METAL PARTICLES COVER SAID SURFACE SO THAT SAID FILM ADHERES TO SAID SURFACE; LOCATING AN AQUEOUS, PLASTIC COMPOSITION AGAINST SAID COATED SURFACE, SAID COMPOSITION BEING CAUSTIC IN CHARACTER, SAID CEMENT WITHIN SAID COMPOSITION BEING CAPABLE OF FORMING A SOLID ARTICLE; AND
Claim 2
Independent Claim
95 words
A METHOD OF FORMING AN ARTICLE FROM A CEMENT, WATER CONTAINING COMPOSITION AGAINST A SURFACE SO THAT SUCH ARTICLE IS RELEASED FROM SAID SURFACE WHICH METHOD COMPRISES: COATING A SURFACE WITH WATER SOLUBLE FILM CONTAINING METAL PARTICLES CAPABLE OF REACTING WITH AN AQUEOUS CAUSTIC SOLUTION SO AS TO FORM A GAS SO THAT SAID METAL PARTICLES COVER SAID SURFACE SO THAT SAID FILM ADHERES TO SAID SURFACE; LOCATING AN AQUEOUS, PLASTIC COMPOSITION AGAINST SAID COATED SURFACE, SAID COMPOSITION BEING CAUSTIC IN CHARACTER, SAID CEMENT WITHIN SAID COMPOSITION BEING CAPABLE OF FORMING A SOLID ARTICLE; AND
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) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |