US3152999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable organo siloxy-aluminum oxide polymers and process of producing same
Assignee: Raytheon Co
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Filing: 1960-05-31
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Granted: 1964-10-13
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Expires: 1980-05-31
Abstract
No abstract record available.
Inventors
- 👤 John B Rust
- 👤 Hideyo H Takimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:54
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/10; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0836
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
A PROCESS FOR THE PRODUCTION OF TRIORGANOSILOXY SUBSTITUTED ALUMINUM OXIDE POLYMER COMPRISING REACTING, BY ORGANIC ESTER ELIMINATION, A TRIALKYLSILOXY ALKOXY ALUMINUM COMPOUND HAVING THE GENERAL FORMULA R3SIOAL(OR'')2 WITH AN ORGANIC ACID ANHYDRIDE, WHEREIN R AND R'' ARE HYDROCARBON ALKYL RADICALS SELECTED FROM THE GROUP CONSISTING OF METHYL, ETHYL, PROPYL, BUTYL, AMYL, AND HEXYL RADICALS.
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) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |