Patent US3145191A successfully refreshed from Google Patents.
US3145191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy compositions
Assignee: Mobil Finishes Co Inc
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Filing: 1959-06-25
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Granted: 1964-08-18
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Expires: 1979-06-25
Abstract
No abstract record available.
Inventors
- 👤 Bruno M Perfetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:27
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD OF PRODUCING RESINOUS POLYEPOXIDES COMPRISING CO-REACTING, IN THE LIQUID PHASE AND IN THE PRESENCE OF STRONG ALKALI, POLYHYDRIC PHENOL CONTAINING ONLY PHENOLIC HYDROXYL GROUPS WITH AT LEAST 0.125 MOL OF POLYOXYPROPYLENE GLYCOL PER MOL OF PHENOLIC HYDROXYL AND AT LEAST 2.0 MOLS OF EPICHLORHYDRIN PER MOL OF PHENOLIC HYDROXYL, SAID POLYOXYPROPYLENE GLYCOL HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 150 UP TO ABOUT 2100 AND SAID STRONG ALKALI BEING CAPABLE OF DEHYDROHALOGENATING A HALOHYDRIN AND BEING PRESENT AT A CONCENTRATION OF FROM 1.0-1.15 MOL PER MOL OF PHENOLIC HYDROXYL.
Claim 2
Independent Claim
92 words
A METHOD OF PRODUCING RESINOUS POLYEPOXIDES COMPRISING CO-REACTING, IN THE LIQUID PHASE AND IN THE PRESENCE OF STRONG ALKALI, POLYHYDRIC PHENOL CONTAINING ONLY PHENOLIC HYDROXYL GROUPS WITH AT LEAST 0.125 MOL OF POLYOXYPROPYLENE GLYCOL PER MOL OF PHENOLIC HYDROXYL AND AT LEAST 2.0 MOLS OF EPICHLORHYDRIN PER MOL OF PHENOLIC HYDROXYL, SAID POLYOXYPROPYLENE GLYCOL HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 150 UP TO ABOUT 2100 AND SAID STRONG ALKALI BEING CAPABLE OF DEHYDROHALOGENATING A HALOHYDRIN AND BEING PRESENT AT A CONCENTRATION OF FROM 1.0-1.15 MOL PER MOL OF PHENOLIC HYDROXYL.
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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |