US3351608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polyurethanes
Assignee: Bayer AG
•
Filing: 1964-02-27
•
Granted: 1967-11-07
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Expires: 1984-02-27
Abstract
No abstract record available.
Inventors
- 👤 Oertel Harald
- 👤 Ley Kurt
- 👤 Rinke Heinrich
- 👤 Thoma Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:27
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20; C08K5/17; C08K5/18; C08K5/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
POLYURETHANE POLYMERS STABILIZED AGAINST DISCOLORATION AND AGING BY HAVING INCORPORATED THEREIN FROM ABOUT 0.1 TO ABOUT 10 PERCENT BY WEIGHT OF A COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
26 words
POLYURETHANE POLYMERS STABILIZED AGAINST DISCOLORATION AND AGING BY HAVING INCORPORATED THEREIN FROM ABOUT 0.1 TO ABOUT 10 PERCENT BY WEIGHT OF A COMPOUND HAVING THE FORMULA:
References Cited (Backward Citations)
US2983702A
Cited
US3150114A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |