Patent US2176978A successfully refreshed from Google Patents.
Patent US2713569A successfully refreshed from Google Patents.
US2713569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urea-epoxy compositions
Assignee: Celanese Coatings Co
•
Filing: 1952-03-17
•
Granted: 1955-07-19
•
Expires: 1972-03-17
Abstract
No abstract record available.
Inventors
- 👤 Greenlee Sylvan Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:00
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
UREA-EPOXY COMPOSITIONS CONTAINING IN SUBSTANTIAL AMOUNTS COMPLEX RESINOUS EPOXIDES AND UREA, SAID COMPLEX RESINOUS EPOXIDES BEING POLYMERIC POLYETHERS OF DIHYDRIC PHENOLS, WHICH DIHYDRIC PHENOLS ARE FREE FROM FUNCTIONAL GROUPS OTHER THAN PHENOLIC HYDROXYL GROUPS, SAID RESINOUS EPOXIDES HAVING A PLURALITY OF AROMATIC NUCLEI ALTERNATING WITH INTERMEDIATE AND TERMINAL ALIPHATIC CHAINS UNITED THROUGH ETHER OXYGEN, THE AROMATIC NUCLEI BEING THE HYDROCARBON NUCLEI OF THE DIHYDRIC PHENOLS, THE INTERMEDIATE ALIPHTIC CHAINS BEING ALCOHOLICHYDROXYL-CONTAINING CHAINS FREE FROM FUNCTIONAL GROUPS OTHER THAN ALCOHOLIC HYDROXYL GROUPS AND THE TERMINAL ALIPHATIC CHAINS HAVING EPOXIDE AND ALCOHOLIC HYDROXYL GROUPS AND BEING FREE FROM OTHER FUNCTIONAL GROUPS.
Claim 2
Dependent Claim
99 words
UREA-EPOXY COMPOSITIONS CONTAINING IN SUBSTANTIAL AMOUNTS COMPLEX RESINOUS EPOXIDES AND UREA, SAID COMPLEX RESINOUS EPOXIDES BEING POLYMERIC POLYETHERS OF DIHYDRIC PHENOLS, WHICH DIHYDRIC PHENOLS ARE FREE FROM FUNCTIONAL GROUPS OTHER THAN PHENOLIC HYDROXYL GROUPS, SAID RESINOUS EPOXIDES HAVING A PLURALITY OF AROMATIC NUCLEI ALTERNATING WITH INTERMEDIATE AND TERMINAL ALIPHATIC CHAINS UNITED THROUGH ETHER OXYGEN, THE AROMATIC NUCLEI BEING THE HYDROCARBON NUCLEI OF THE DIHYDRIC PHENOLS, THE INTERMEDIATE ALIPHTIC CHAINS BEING ALCOHOLICHYDROXYL-CONTAINING CHAINS FREE FROM FUNCTIONAL GROUPS OTHER THAN ALCOHOLIC HYDROXYL GROUPS AND THE TERMINAL ALIPHATIC CHAINS HAVING EPOXIDE AND ALCOHOLIC HYDROXYL GROUPS AND BEING FREE FROM OTHER FUNCTIONAL GROUPS.
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) | 1958-07-18 | 1959-01-17 | 1959-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-18 | 1963-01-17 | 1963-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-18 | 1967-01-17 | 1967-07-19 | $7700.00 | Window Closed / Lapsed |