US3645983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolyamides from 3-(4-carboxyphenyl)-1 1 3-trimethyl-5-indan carboxylic acid and bis(beta - aminoethyl)benzene ordurene
Assignee: Monsanto Co
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Filing: 1968-11-29
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Granted: 1972-02-29
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Expires: 1988-11-29
Abstract
Abstract COPOLYAMIDES ARE PREPARED BY POLYMERIZING ADIPIC ACID, HEXAMETHYLENE DIAMINE, 3-(4-CARBOXYPHENYL)-1,1,3-TRIMETHYL-5-INDIAN CARBOXYLIC ACID AND BIS(BETA-AMINOETHYL) BENEZENE OR BIS(BETA-AMINOETHYL)DURENE. FILAMENTS MADE FROM SUCH COPORLYAMIDES ARE USEFUL IN REINFORCING RUBBER ARTICLES SUCH AS PNEUMATIC TIRES.
Inventors
- 👤 James S Ridgway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:06
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/0042; C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/265
Claims Analysis
Total Claims: 0
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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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |