US3546152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for reducing viscosity of polytrimellitamide-imide solution
Assignee: Standard Oil Co
•
Filing: 1968-08-06
•
Granted: 1970-12-08
•
Expires: 1988-08-06
Abstract
No abstract record available.
Inventors
- 👤 Benjamin A Bolton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:05
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3190856A
Cited
US3179631A
Cited
US3242136A
Cited
US3440215A
Cited
US3440197A
Cited
US3440196A
Cited
US3448068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |