US3496144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hydrolysis-resistant polyurethane elastomers based on adipic acid; 1,6-hexanediol; 2,2,4-trimethyl-1,3-pentanediol polyesters
Assignee: BASF SE
•
Filing: 1966-11-29
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Granted: 1970-02-17
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Expires: 1986-11-29
Abstract
No abstract record available.
Inventors
- 👤 Joachim Kunde
- 👤 Hans Wilhelm
- 👤 Helmut Doerfel
- 👤 Konrad Rauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:16
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4236; C08G18/4238; C08G18/08; C08G18/10; Y; Y10; Y10S; Y10S528/00; Y10S528/903; Y10S528/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2929800A
Cited
US3071557A
Cited
US3202636A
Cited
GB917450A
Cited
GB947840A
Cited
US3165566A
Cited
US3379683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |