US2581464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxide compositions
Assignee: Celanese Coatings Co
•
Filing: 1947-09-16
•
Granted: 1952-01-08
•
Expires: 1967-09-16
Abstract
No abstract record available.
Inventors
- 👤 John D Zech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:06
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
HALOGEN-CONTAINING POLYETHER POLYEPOXIDE COMPOSITIONS OF MATTER, OBTAINABLE BY PARTIAL DEHYDROHALOGENATION OF POLYHALOHYDRIN POLYETHERS OF ALIPHATIC POLYHYDRIC ALCOHOLS CONTAINING FROM 3 TO 6 HYDROXYL GROUPS, SAID COMPOSITION BEING A MIXTURE OF EPOXIDE PRODUCTS HAVING AN AVERAGE COMPOSITION EXPRESSED BY THE FOLLOWING GENERAL FORMULA.
Claim 2
Dependent Claim
42 words
HALOGEN-CONTAINING POLYETHER POLYEPOXIDE COMPOSITIONS OF MATTER, OBTAINABLE BY PARTIAL DEHYDROHALOGENATION OF POLYHALOHYDRIN POLYETHERS OF ALIPHATIC POLYHYDRIC ALCOHOLS CONTAINING FROM 3 TO 6 HYDROXYL GROUPS, SAID COMPOSITION BEING A MIXTURE OF EPOXIDE PRODUCTS HAVING AN AVERAGE COMPOSITION EXPRESSED BY THE FOLLOWING GENERAL 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) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |