US3554990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of 2-cyanopenta-2,4-dienoic acid and polymers thereof
Assignee: Permabond International Corp
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Filing: 1968-06-10
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Granted: 1971-01-12
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Expires: 1988-06-10
Abstract
Abstract NOVEL ESTERS OF 2-CYANOPENTA-2,4-DIENOIC ACID HAVING THE STRUCTURAL FORMULA CH2=CH-CH=C(-CN)-COO-R WHEREIN R IS AN ALKENYL GROUP OF 2-10 CARBON ATOMS OR AN ALKOXY SUBSTITUTED ALKYL GROUP OF 2-10 CARBON ATOMS. THESE ESTERS ARE USEFUL AS ADHESIVES FOR GENERAL AND PARTICULARLY FOR SURGICAL USES. THESE COMPOUNDS ARE PARTICULARLY CHARACTERIZED BY THE FACT THAT THEY ARE AUTOPOLYMERIZABLE AND PRODUCE STRONG, FLEXIBLE BONDS WHICH ARE HIGHLY RESISTANT TO FRACTURE UNDER IMPACT.
Inventors
- 👤 Edwin K Quinn
- 👤 Gary F Hawkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:44
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; A; A61; A61L; A61L24/00; A61L24/04; A61L24/06; C07; C07C; C07C255/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31855; Y10T428/31935
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |