US3249565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weather resistant halogen-containing polyester resins comprising 2, 4-dihydroxybenzophenone
Assignee: Hooker Chemical Corp
•
Filing: 1965-04-28
•
Granted: 1966-05-03
•
Expires: 1985-04-28
Abstract
No abstract record available.
Inventors
- 👤 Robitschek Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:40
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/682; C08G63/6824; C08G63/6828
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
A COMPOSITIN OF MATTER COMPRISING A HALOEN-CONTAINING UNSATURATED POLYESTER OF A POLYBASIC ACID AND A POLYHYDRIC ALCOHOL, AND AS A WEATHER-RESISTANT AGENT THEREFOR, FROM ABOUT 0.01 TO 5 PERCENT BY WEIGHT OF 2,4DIHYDROXYBENZOPHENONE, AND UP TO 10 PERCENT BY WEIGHT OF AN EPOXY COMPOUND HAVING AN EPOXY OXYGEN ATOM BETWEEN TWO VICINAL CARBO ATOMS.
References Cited (Backward Citations)
US2456216A
Cited
US2572571A
Cited
US2556145A
Cited
US2564646A
Cited
US2669549A
Cited
US2777828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |