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US3636036A
Expired / Lapsed
US
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Alkyl substituted phenylene diisonitriles
Assignee: Individual
•
Filing: 1970-02-11
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Granted: 1972-01-18
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Expires: 1990-02-11
Abstract
Abstract 1-METHYL-3,5-DIETHYL-2,4-PHENYLENE-DIISONITRILE, AND 2,4, 6-TRISOPROPYL-1,3-PHENYLENE-DIISONITRILE. THE COMPOUNDS ARE USEFUL AS CROSS-LINKING AND HARDENING AGENTS FOR PLASTICS WHICH CONTAIN CARBOXYL GROUPS.
Inventors
- 👤 Ivar Ugi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:19
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D307/91; C07C; C07C251/00; C08; C08K; C08K5/00; C08K5/16
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |