US2818405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomeric reaction products of bismaleimides with organic diamines
Assignee: EIDP Inc
•
Filing: 1956-11-21
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Granted: 1957-12-31
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Expires: 1976-11-21
Abstract
No abstract record available.
Inventors
- 👤 Kovacic Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:14
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/12; C08G73/121; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31721
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A LIQUID COMPOSITION COMPRISING AN INTIMATE MIXTURE OF (1) A BISMALEIMIDE OF THE STRUCTURE
Claim 2
Dependent Claim
14 words
A LIQUID COMPOSITION COMPRISING AN INTIMATE MIXTURE OF (1) A BISMALEIMIDE OF THE STRUCTURE
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) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |