US3320184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon-containing polyisocyanates
Assignee: Monsanto Co
•
Filing: 1963-12-09
•
Granted: 1967-05-16
•
Expires: 1983-12-09
Abstract
No abstract record available.
Inventors
- 👤 Fink Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:54
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/10; C08; C08G; C08G18/00; C08G18/02; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/778
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A POLYMER OF A SILICON-CONTAINING HETEROCYCLIC TRIISOCYANATE OF THE FORMULA
Claim 2
Dependent Claim
10 words
A POLYMER OF A SILICON-CONTAINING HETEROCYCLIC TRIISOCYANATE OF THE FORMULA
References Cited (Backward Citations)
US2462635A
Cited
US3147296A
Cited
US3032530A
Cited
US3178391A
Cited
US3180883A
Cited
US3179713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |