US2890207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Maleimide polymers
Assignee: Union Carbide Corp
•
Filing: 1956-11-28
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Granted: 1959-06-09
•
Expires: 1976-11-28
Abstract
No abstract record available.
Inventors
- 👤 Eugene A Kraiman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:29
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A NORMALLY SOLID THERMOPLASTIC RRESINOUS HEAT REACTION PRODUCT OF ABOUT EQUIMOLAR AMOUNTS OF N,N''-BISMALEIMIDE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
18 words
A NORMALLY SOLID THERMOPLASTIC RRESINOUS HEAT REACTION PRODUCT OF ABOUT EQUIMOLAR AMOUNTS OF N,N''-BISMALEIMIDE HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |