Patent US2743303A successfully refreshed from Google Patents.
Patent US3347824A successfully refreshed from Google Patents.
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
•
Granted: 1967-10-17
•
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 23:23
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
Cited
US2584343A
Cited
US2584342A
Cited
US2584344A
Cited
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 |