US3375264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-alkoxy or alkylthio-4, 4'-diisocyanato diphenylmethanes
Assignee: Pharmacia and Upjohn Co
•
Filing: 1964-09-14
•
Granted: 1968-03-26
•
Expires: 1984-09-14
Abstract
No abstract record available.
Inventors
- 👤 Adnan A R Sayigh
- 👤 James N Tilley
- 👤 Ulrich Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:31
CPC Classifications
C; C07; C07C; C07C265/00; C07C265/12; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/771; C08G18/775
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |