Patent CA1127753A successfully refreshed from Google Patents.
Patent US2951829A successfully refreshed from Google Patents.
US2951829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenated epoxy resins
Assignee: GAF Chemicals Corp
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Filing: 1956-12-28
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Granted: 1960-09-06
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Expires: 1976-12-28
Abstract
No abstract record available.
Inventors
- 👤 Max E Chiddix
- 👤 Robert W Wynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:29
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A SYNTHETIC RESIN OBTAINED BY CONDENSING THE PRODUCT RESULTING FROM THE REACTION OF 2,2,3,3-TETRACHLORO-1,4BUTANEDIOL WITH EPICHLOROHYDRIN IN THE PRESENCE OF AN ALKALI HYDROXIDE AS CATALYST AND AN ALCOHOL AS SOLVENT AT A TEMPERATURE OF FROM ROOM TEMPERATURE TO 150*C., WITH FROM .6 TO 1.2 MOLAR PROPORTIONS OF A BIFUNCTIONAL CO-CONDENSATE SELECTED FROM THE GROUP CONSISTING OF A DIAMINE, A POLYCARBOXYLIC ACID AND A DICARBOXYLIC ACID ANHYDRIDE.
Claim 2
Dependent Claim
66 words
A SYNTHETIC RESIN OBTAINED BY CONDENSING THE PRODUCT RESULTING FROM THE REACTION OF 2,2,3,3-TETRACHLORO-1,4BUTANEDIOL WITH EPICHLOROHYDRIN IN THE PRESENCE OF AN ALKALI HYDROXIDE AS CATALYST AND AN ALCOHOL AS SOLVENT AT A TEMPERATURE OF FROM ROOM TEMPERATURE TO 150*C., WITH FROM .6 TO 1.2 MOLAR PROPORTIONS OF A BIFUNCTIONAL CO-CONDENSATE SELECTED FROM THE GROUP CONSISTING OF A DIAMINE, A POLYCARBOXYLIC ACID AND A DICARBOXYLIC ACID ANHYDRIDE.
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) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |