US3645978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyiminohydantoins and method of preparation
Assignee: EIDP Inc
•
Filing: 1970-08-26
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Granted: 1972-02-29
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Expires: 1990-08-26
Abstract
Abstract A NOVEL POLYIMINOHYDANTOIN COMPOSITION WHICH IS THE REACTION PRODUCT OF A MULTIFUNCTIONAL ISOCYANATE AND A MULTIFUNCTIONAL CYANOMETHYLAMINE SAID POLYMER HAVING UTILITY AS HIGH TEMPERATURE ADHESIVES STRUCXTURAL LAMINATES AND AS BINDERS FOR LAMINATED CIRCUIT BOARDS.
Inventors
- 👤 James M Craven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:40
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/3838; C08G73/00; C08G73/06; C08G73/0605; C08G73/0616; Y; Y10; Y10S; Y10S260/00; Y10S260/34; Y10S528/00; Y10S528/905
Claims Analysis
Total Claims: 0
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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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |