US3401151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethanes having improved dyeability
Assignee: Bayer AG
•
Filing: 1965-10-15
•
Granted: 1968-09-10
•
Expires: 1985-10-15
Abstract
No abstract record available.
Inventors
- 👤 Wieden Horst
- 👤 Thoma Wilhelm
- 👤 Oertel Harald
- 👤 Rollensmann Wolfgang
- 👤 Nischk Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:18
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0819; C08G18/0828; C08G18/10; Y; Y10; Y10S; Y10S528/00; Y10S528/906
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CA734965A
Cited
US2929804A
Cited
GB827745A
Cited
US3184502A
Cited
US3066158A
Cited
US3305533A
Cited
US3294752A
Cited
DE1223154B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |