US3347824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction between aromatic diacyl compounds and aromatic silanes and the polymers produced therefrom
Assignee: American Potash and Chemical Corp
•
Filing: 1963-09-03
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Granted: 1967-10-17
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Expires: 1983-09-03
Abstract
No abstract record available.
Inventors
- 👤 Robert M Washburn
- 👤 Kendrick R Eilar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:09
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/60
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
36 words
PROCESS FOR PRODUCING A CARBOXY-SILANOL POLYMER COMPRISING ADMIXING AND REACTING AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 20*C. TO 300*C. AN AROMATIC DIACYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF AT LEAST ONE OF
Claim 2
Dependent Claim
36 words
PROCESS FOR PRODUCING A CARBOXY-SILANOL POLYMER COMPRISING ADMIXING AND REACTING AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 20*C. TO 300*C. AN AROMATIC DIACYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF AT LEAST ONE OF
Claim 3
Dependent Claim
10 words
THE CARBOXY-SILANOL POLYMER PRODUCED BY THE PROCESS OF CLAIM 1.
References Cited (Backward Citations)
CA528135A
Cited
US3126403A
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US2584343A
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US2584342A
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US2584344A
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US2910496A
Cited
US3058911A
Cited
US3207814A
Cited
US3179612A
Cited
US3250802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |