US2965608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethers of epoxy-substituted polyhydric phenols and their polymers
Assignee: Shell USA Inc
•
Filing: 1956-12-10
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Granted: 1960-12-20
•
Expires: 1976-12-10
Abstract
No abstract record available.
Inventors
- 👤 Robert W Martin
- 👤 Carl G Schwarzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:33
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/24; C08G59/245; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24; C07D303/28; C08G59/32; C08G59/3218
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
ETHERS OF THE FORMULA (RO)NX WHEREIN R IS A MEMBER OF THE GROUP CONSISTING OF HYDROCARBON RADICALS, VIC-EPOXY-SUBSTITUTED HYDROCARBON RADICALS, VIC-EPOXYALKOXYALKYL RADICALS, HALOGEN-SUBSTITUTED HYDROCARBON RADICALS, HALOGEN-HYDROXY-SUBSTITUTED HYDROCARBON RADICALS, ALKOXY-SUBSTITUTED HYDROCARBON RADICALS AND HYDROXY-SUBSTITUTED HYDROCARBON RADICALS, ALL OF THE FOREGOING RADICALS OF THIS GROUP CONTAINING UP TO AND INCLUDING 12 CARBON ATOMS EACH, X IS A RADICAL OBTAINED BY REMOVING ALL OF THE PHENOLIC OH FROM A POLYHYDRIC PHENOL SUBSTITUTED ON THE PHENOL RING WITH AT LEAST ONE VIIC-EPOXYSUBSTITUTED HYDROCARBON RADICAL, AND N IS EQUAL TO THE NUMBER OF PHENOLIC OH GROUPS ON THE SAID POLYHYDRIC PHENOL.
Claim 2
Dependent Claim
96 words
ETHERS OF THE FORMULA (RO)NX WHEREIN R IS A MEMBER OF THE GROUP CONSISTING OF HYDROCARBON RADICALS, VIC-EPOXY-SUBSTITUTED HYDROCARBON RADICALS, VIC-EPOXYALKOXYALKYL RADICALS, HALOGEN-SUBSTITUTED HYDROCARBON RADICALS, HALOGEN-HYDROXY-SUBSTITUTED HYDROCARBON RADICALS, ALKOXY-SUBSTITUTED HYDROCARBON RADICALS AND HYDROXY-SUBSTITUTED HYDROCARBON RADICALS, ALL OF THE FOREGOING RADICALS OF THIS GROUP CONTAINING UP TO AND INCLUDING 12 CARBON ATOMS EACH, X IS A RADICAL OBTAINED BY REMOVING ALL OF THE PHENOLIC OH FROM A POLYHYDRIC PHENOL SUBSTITUTED ON THE PHENOL RING WITH AT LEAST ONE VIIC-EPOXYSUBSTITUTED HYDROCARBON RADICAL, AND N IS EQUAL TO THE NUMBER OF PHENOLIC OH GROUPS ON THE SAID POLYHYDRIC PHENOL.
References Cited (Backward Citations)
US2665266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |