US3573259A
Expired / Lapsed
US
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Process for the preparation of isocyanurate-containing polyisocyanate salts
Assignee: Marathon Oil Co
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Filing: 1968-03-22
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Granted: 1971-03-30
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Expires: 1988-03-22
Abstract
Abstract ISOCYANURATE-CONTAINING POLYISOCYANATE METAL SALTS ARE PREPARED BY REACTING METAL CYANATE WITH ORGANIC DIISOCYANATE IN THE PRESENCE OF APROTIC SOLVENT AT A TEMPERATURE OF FROM ABOUT 0 TO 250*C.
Inventors
- 👤 Perry A Argabright
- 👤 Brian L Phillips
- 👤 Joe T Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:38
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/79; C08G18/791; C08G18/02; C08G18/022
Claims Analysis
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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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |