US3484413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethanes prepared from the cyclization product of a polyglycidyl carbamate
Assignee: Bayer Corp
•
Filing: 1968-04-29
•
Granted: 1969-12-16
•
Expires: 1988-04-29
Abstract
No abstract record available.
Inventors
- 👤 Marvin L Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:37
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5054; C08G18/5057; C08G18/08; C08G18/10; C08G18/2805; C08G18/2815; C08G18/2845; C08G18/42; C08G18/46; C08G18/4615; 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)
US2744897A
Cited
US2701246A
Cited
US2830038A
Cited
US3248373A
Cited
US3415901A
Cited
US3313747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |