US2706720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interpolymers of acrylonitrile with amides and imides of bicyclo-(2,2,1)-5-heptene carboxylic acids
Assignee: Eastman Kodak Co
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Filing: 1953-08-19
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Granted: 1955-04-19
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Expires: 1973-08-19
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:29
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
28 words
A SOLUTION OF A POLYMER COMPRISING FROM 65 TO 95% BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUPS CONSISTING OF THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULAE:
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) | 1958-04-18 | 1958-10-18 | 1959-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-18 | 1962-10-18 | 1963-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-18 | 1966-10-18 | 1967-04-19 | $7700.00 | Window Closed / Lapsed |