Patent US3598789A successfully refreshed from Google Patents.
US3598789A
Expired / Lapsed
US
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Fiber-forming pacm-16
Assignee: EIDP Inc
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Filing: 1968-01-08
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Granted: 1971-08-10
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Expires: 1988-01-08
Abstract
Abstract LINEAR POLYAMIDES OF FIBER-FORMING MOLECULAR WEIGHT THAT ARE USEFUL FOR PRODUCTION OF HIGH RECOVERY,WASH-WEAR FABRICS CAN BE OBTAINED FROM BI(4-AMINOCYCLOHEXYL), BIS(4-AMINOCYCLOHEXYL)METHANE OR 1,2 - BIS(4-AMINOCYCLOHEXYL)ETHANE AND HEXADECANEDIOIC ACID.
Inventors
- 👤 Emerson A Tippetts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:35
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C07; C07C; C07C51/00; C07C51/41; C07C51/412; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/60; C07D211/62; C07D211/64
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |