US3008913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction product of fibrous alumina monohydrate, tetraethyl orthosilicate, and diphenylsilanediol, process for making, and solvent solution thereof
Assignee: EIDP Inc
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Filing: 1958-10-29
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Granted: 1961-11-14
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Expires: 1978-10-29
Abstract
No abstract record available.
Inventors
- 👤 Pangonis William James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:08
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
A COMPOSITION OF MATTER COMPRISING ESSENTIALLY AN ORGANIC SOLVENT SOLUTION OF THE POLYMERIC PRODUCT RESULTING FROM THE REACTION BETWEEN FROM 10% TO 90% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF REACTANTS, OF FIBROUS ALUMINA MONOHYDRATE SUBSTANTIALLY IN THE FORM OF FIBRILS HAVING A BOEHMITE CRYSTAL LACTICE AND EACH FIBRIL HAVING A DIAMETER LESS THAN 150 MILLIMICRONS, FROM 5% TO 45% OF TETRAETHYL ORTHOSILICATE, AND FROM 5% TO 45% OF DIPHENYLSILANEDIOL, SAID PRODUCT HAVING A MELTING POINT ABOVE 300*C., THE CONCENTRATION OF SAID PRODUCT IN SOLUTION BEING WITHIN THE RANGE OF 0.5% TO 40% BY WEIGHT.
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) | 1964-11-13 | 1965-05-15 | 1965-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-13 | 1969-05-15 | 1969-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-13 | 1973-05-15 | 1973-11-14 | $7700.00 | Window Closed / Lapsed |