US2799693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethyl silicate
Assignee: Monsanto Chemicals Ltd
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Filing: 1952-10-20
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Granted: 1957-07-16
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Expires: 1972-10-20
Abstract
No abstract record available.
Inventors
- 👤 Dodgson Douglas Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:32
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/04; B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR THE PRODUCTION OF A LIQUID, PARTIALLY CONDENSED FORM OF ETHYL SILICATE HAVING AN SIO2 CONTENT OF ABOVE 50%, COMPRISING REACTING A PARTIALLY CONDENSED ETHYL SILICATE HAVING AN SI02 CONTENT OF ABOUT 40% WITH AN AQUEOUS ETHYL ALCOHOL CONTAINING LESS THAN 11% BY WEIGHT OF WATER BASED UPON SAID ALCOHOL, SAID WATER BEING SUFFICIENT TO PARTIALLY CONDENSE SAID ETHYL SILICATE TO AN SI02 CONTENT OF ABOVE 50%.
Claim 2
Dependent Claim
69 words
A PROCESS FOR THE PRODUCTION OF A LIQUID, PARTIALLY CONDENSED FORM OF ETHYL SILICATE HAVING AN SIO2 CONTENT OF ABOVE 50%, COMPRISING REACTING A PARTIALLY CONDENSED ETHYL SILICATE HAVING AN SI02 CONTENT OF ABOUT 40% WITH AN AQUEOUS ETHYL ALCOHOL CONTAINING LESS THAN 11% BY WEIGHT OF WATER BASED UPON SAID ALCOHOL, SAID WATER BEING SUFFICIENT TO PARTIALLY CONDENSE SAID ETHYL SILICATE TO AN SI02 CONTENT OF ABOVE 50%.
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) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |