US3658801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trisubstituted isocyanurates
Assignee: Dart Industries Inc
•
Filing: 1969-06-10
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Granted: 1972-04-25
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Expires: 1989-06-10
Abstract
Abstract A SCRATCH RESISTANT THERMOSETTING RESIN HAVING EXCELLENT SURFACE HARDNESS IS DERIVED FROM A TRISUBSTITUTED ISOCYANURATE COMPOSITION REPRESENTED BY THE FORMULA: 1,3,5-TRIS(CH2=C(-R2)-CH2-OOC-O-R1-)-S-TRIAZINE-2,4,6- TRIONE WHEREIN R1 IS A LOWER ALKYL AND R2 IS H OR AN ALKYL, ARYL, ARALKYL OR ALKARYL HYDROCARBON RADICAL.
Inventors
- 👤 David A Berry
- 👤 Gilbert M Gynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:49
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/01
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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |