US3584028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of organic isocyanates
Assignee: Marathon Oil Co
•
Filing: 1967-01-25
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Granted: 1971-06-08
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Expires: 1987-01-25
Abstract
Abstract THE PRESENT INVENTION COMPRISES A PROCESS FOR THE MANUFACTURE OF ORGANIC ISOCYANATES COMPRISING REACTING ORGANIC CHLORIDES WITH METAL CYANATES IN THE CONJOINT PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL BROMIDES, ALKALINE EARTH METAL BROMIDES, ALKALI METAL IODIDES AND ALKALINE EARTH METAL IODIDES AND AN APROTIC SOLVENT.
Inventors
- 👤 Perry A Argabright
- 👤 Vernon J Sinkey
- 👤 Brian L Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:39
CPC Classifications
C; C07; C07C; C07C263/00
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |