Patent US2885423A successfully refreshed from Google Patents.
US2885423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of organic isocyanates
Assignee: EIDP Inc
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Filing: 1956-01-27
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Granted: 1959-05-05
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Expires: 1976-01-27
Abstract
No abstract record available.
Inventors
- 👤 Spiegler Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:27
CPC Classifications
C; C07; C07C; C07C265/00; C07C265/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
AN ORGANIC ISOCYANATE OF THE CLASS CONSISTING OF ALIPHATIC, CYCLOALIPHATIC AND AROMATIC ISOCYANATES STABILIZED AGAINST DISCOLORATION BY HAVING DISSOLVED THEREIN FROM 0.01% TO 0.5% BY WEIGHT, BASED ON THE ISOCYANATE, OF AN ESSENTIALLY COLORLESS COMPOUND OF THE GROUP CONSISTING OF ALKYL AND ARYL ESTERS OF CARBONIC ACID, THE ARYL GROUPS IN THE ARYL ESTERS BEING OF TH EBENZENE SERIES.
Claim 2
Dependent Claim
59 words
AN ORGANIC ISOCYANATE OF THE CLASS CONSISTING OF ALIPHATIC, CYCLOALIPHATIC AND AROMATIC ISOCYANATES STABILIZED AGAINST DISCOLORATION BY HAVING DISSOLVED THEREIN FROM 0.01% TO 0.5% BY WEIGHT, BASED ON THE ISOCYANATE, OF AN ESSENTIALLY COLORLESS COMPOUND OF THE GROUP CONSISTING OF ALKYL AND ARYL ESTERS OF CARBONIC ACID, THE ARYL GROUPS IN THE ARYL ESTERS BEING OF TH EBENZENE SERIES.
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) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |