US3297592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature resistant polymeric cyclodisilazanes
Assignee: Monsanto Co
•
Filing: 1964-10-14
•
Granted: 1967-01-10
•
Expires: 1984-10-14
Abstract
No abstract record available.
Inventors
- 👤 Fink Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:38
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/60
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
6 words
A POLYMERIC CYCLODISILAZANE OF THE FORMULA
Claim 2
Dependent Claim
6 words
A POLYMERIC CYCLODISILAZANE OF THE FORMULA
Claim 3
Dependent Claim
17 words
A PROCESS FOR PREPARING A POLYMERIC CYCLODISILAZANE OF CLAIM 1 COMPRISING HEATING A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US3140288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |