US3440187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft polymer of natural rubber and polydiene
Assignee: Sinclair Research Inc
•
Filing: 1965-06-24
•
Granted: 1969-04-22
•
Expires: 1985-06-24
Abstract
No abstract record available.
Inventors
- 👤 David W Young
- 👤 Richard F Poss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:29
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08G; C08G81/00; C08G81/02; C08G81/021; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/146; C10L1/16; C10L1/1625; C10L1/1633; C10L1/18; C10L1/192; C10L1/195; C10L1/20; C10L1/206; C10L1/22; C10L1/234; C10L1/236; C10M2209/00; C10M2209/02; C10M2209/10; C10M2213/00; C10M2213/04; C10M2213/06; C10M2217/00; C10M2217/02; C10M2217/026
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2451048A
Cited
US3337489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |