Patent US2993026A successfully refreshed from Google Patents.
US2993026A
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Epoxy resin composition containing diglycidyl ether of 2, 4'-dihydroxy diphenyl sulfone
Assignee: Tennessee Corp
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Filing: 1958-08-25
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Granted: 1961-07-18
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Expires: 1978-08-25
Abstract
No abstract record available.
Inventors
- 👤 William C Duckworth
- 👤 Singley John Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:06
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C08G59/30; C08G59/302
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
AN EPOXY RESIN COMPOSITION CURABLE TO FORM CASTINGS, SURFACE COATINGS AND THE LIKE CONTAINING (A) AN EPOXY RESIN CONSISTING ESSENTIALLY OF A MEMBER OF THE GROUP CONSISTING OF A DIGLYCIDLY ETHER OF A BISPHENOL IN WHICH TWO PHENOL RADICALS ARE LINKED TOGETHER THROUGH A CARBON ATOM AND POLYMERIZED DERIVATIVES OF SUCH A DIGLYCIDLY EITHER, AND (B) AN EPOXY RESIN CONSISTING ESSENTIALLY OF DIGLYCIDLY EITHER 2,4''-DIHYDROXY DIPHENYL SULFONE, RESIN (B) BEING IN THE PROPORTION OF 10% TO 90% BY WEIGHT OF RESIN (A).
Claim 2
Dependent Claim
82 words
AN EPOXY RESIN COMPOSITION CURABLE TO FORM CASTINGS, SURFACE COATINGS AND THE LIKE CONTAINING (A) AN EPOXY RESIN CONSISTING ESSENTIALLY OF A MEMBER OF THE GROUP CONSISTING OF A DIGLYCIDLY ETHER OF A BISPHENOL IN WHICH TWO PHENOL RADICALS ARE LINKED TOGETHER THROUGH A CARBON ATOM AND POLYMERIZED DERIVATIVES OF SUCH A DIGLYCIDLY EITHER, AND (B) AN EPOXY RESIN CONSISTING ESSENTIALLY OF DIGLYCIDLY EITHER 2,4''-DIHYDROXY DIPHENYL SULFONE, RESIN (B) BEING IN THE PROPORTION OF 10% TO 90% BY WEIGHT OF RESIN (A).
References Cited (Backward Citations)
US2735829A
Cited
US2767157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |