US3383400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acylated urea polyisocyanates and process for the preparation thereof
Assignee: Bayer AG
•
Filing: 1965-01-05
•
Granted: 1968-05-14
•
Expires: 1985-01-05
Abstract
No abstract record available.
Inventors
- 👤 Meisert Ernst
- 👤 Mennicken Gerhard
- 👤 Wagner Kuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:18
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/34; C08G18/341; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/7806; C08G18/7812; C08G18/80; C08G18/8003; C08G18/8048; Y; Y10; Y10S; Y10S528/00; Y10S528/905
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2268586A
Cited
US3124605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |