Patent US3287327A successfully refreshed from Google Patents.
US3287327A
Expired / Lapsed
US
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Copolymers of bicyclo [2.2.1] hepta-2, 5-diene
Assignee: Union Carbide Corp
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Filing: 1961-07-27
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Granted: 1966-11-22
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Expires: 1981-07-27
Abstract
No abstract record available.
Inventors
- 👤 Nathan L Zutty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:55
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/025; B41M5/0253; C; C08; C08F; C08F232/00; C08F232/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A NORMALLY SOLID COPOLYMER OF BICYCLO (2.21) HEPTA2,5-DIENE AND AT LEAST ONE POLYMERIZABLE, ETHYLENICALLY UNSATURATED COMPOUND REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
20 words
A NORMALLY SOLID COPOLYMER OF BICYCLO (2.21) HEPTA2,5-DIENE AND AT LEAST ONE POLYMERIZABLE, ETHYLENICALLY UNSATURATED COMPOUND REPRESENTED BY THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |