Patent US1887162A successfully refreshed from Google Patents.
Patent US2937162A successfully refreshed from Google Patents.
US2937162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamides of bicyclo-(3, 3, 0)-octane-1, 4-dicarboxylic acid
Assignee: Eastman Kodak Co
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Filing: 1958-06-18
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Granted: 1960-05-17
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Expires: 1978-06-18
Abstract
No abstract record available.
Inventors
- 👤 James C Martin
- 👤 John R Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:51
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A HIGHLY POLYMERIC LINEAR CONDENSATION-TYPE POLYAMIDE HAVING AN INHERENT VISCOSITY MELASURED IN A MIXTURE OF 60% PHENOL AND 40% TETRACHLORETHANE OF AT LEAST 0.4, MELTING AT ABOVE 200* C., OF A BIFUNCTIONAL ORGANIC DICARBOXYLIC ACID COMPRISED OF A MAJOR PROPORTION OF AN ACID HAVING THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
47 words
A HIGHLY POLYMERIC LINEAR CONDENSATION-TYPE POLYAMIDE HAVING AN INHERENT VISCOSITY MELASURED IN A MIXTURE OF 60% PHENOL AND 40% TETRACHLORETHANE OF AT LEAST 0.4, MELTING AT ABOVE 200* C., OF A BIFUNCTIONAL ORGANIC DICARBOXYLIC ACID COMPRISED OF A MAJOR PROPORTION OF AN ACID HAVING THE FOLLOWING FORMULA:
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) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |