US3703595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass-clear polyamides
Assignee: BASF SE
•
Filing: 1970-04-20
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Granted: 1972-11-21
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Expires: 1990-04-20
Abstract
Abstract GLASS-CLEAR POLYAMIDES CONSISTING ESSENTIALLY OF POLYMERIC CONDENSATION PRODUCTS OF A MIXTURE OF STEREOISOMERS OF 2,2-BIS-(4-AMINOCYCLOHEXYL)-PROPANE AQND AN ALIPHATIC OR CARBOXYCLIC DICARBOXYLIC ACID HAVING SIX TO TEN CARBON ATOMS AND, IF DESIRED, CAPROLACTAM OR ADIPIC ACID AND HEXAMETHYLENE-DIAMINE. THE POLYAMIDES ARE USEFUL FOR THE PRODUCTION OF MOLDINGS.
Inventors
- 👤 Georg Falkenstein
- 👤 Hans Georg Peine
- 👤 Helmut Doerfel
- 👤 Paul Raff
- 👤 Ludwig Schuster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:24
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26
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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |