Patent US2840040A successfully refreshed from Google Patents.
Patent US3429966A successfully refreshed from Google Patents.
Patent US3226413A successfully refreshed from Google Patents.
US3226413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of organic isocyanates with hydrazine compounds
Assignee: Olin Corp
•
Filing: 1963-03-20
•
Granted: 1965-12-28
•
Expires: 1983-03-20
Abstract
No abstract record available.
Inventors
- 👤 Smith Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:29
CPC Classifications
C; C07; C07C; C07C265/00; C07C265/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
AN ORGANIC ISOCYANATGE CONTAINING A STABILIZING PROPORTION OF A SUBSTITUTED HYDRAZINE SELECTED FROM THE GROUP CONSISTING OF SUBSTITUTED HYDRAZINES HAVING THE FORMULA
Claim 2
Dependent Claim
22 words
AN ORGANIC ISOCYANATGE CONTAINING A STABILIZING PROPORTION OF A SUBSTITUTED HYDRAZINE SELECTED FROM THE GROUP CONSISTING OF SUBSTITUTED HYDRAZINES HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |