US3000864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxynorcamphanecarboxylic acids and esters, and polyesters thereof
Assignee: Eastman Kodak Co
•
Filing: 1958-04-04
•
Granted: 1961-09-19
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Expires: 1978-04-04
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
- 👤 Jr Winston J Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:14
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/60; C08G63/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A LINEAR FIBER-FORMING POLYESTER SELECTED FROM THE GROUP CONSISTING OF (1) A HOMOPOLYESTER OF A HYDROXYCAMPHANECARBOXYLIC ACID REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
23 words
A LINEAR FIBER-FORMING POLYESTER SELECTED FROM THE GROUP CONSISTING OF (1) A HOMOPOLYESTER OF A HYDROXYCAMPHANECARBOXYLIC ACID REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
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US2314846A
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US2360866A
Cited
US2382313A
Cited
US2471790A
Cited
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Cited
US2758987A
Cited
US2811511A
Cited
US2894976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |