US3313775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacturing glycidyl ethers of polyhydric phenols
Assignee: Shell USA Inc
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Filing: 1963-08-16
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Granted: 1967-04-11
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Expires: 1983-08-16
Abstract
No abstract record available.
Inventors
- 👤 Helmut J Frankel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:47
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/063; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A PROCESS FOR PREPARING SOLID GLYCIDYL ETHERS OF POLYHYDRIC PHENOLS HAVING VERY LIGHT COLOR WHICH COMPRISES FORMING AN AQUEOUS SLURRY OF THE POLYHYDRIC PHENOL AND A HALOHYDRIN OF THE GROUP CONSISTING OF EPIHALOHYDRIN AND A GLYCEROL HALOHYDRIN OF THE FORMULA
Claim 2
Dependent Claim
40 words
A PROCESS FOR PREPARING SOLID GLYCIDYL ETHERS OF POLYHYDRIC PHENOLS HAVING VERY LIGHT COLOR WHICH COMPRISES FORMING AN AQUEOUS SLURRY OF THE POLYHYDRIC PHENOL AND A HALOHYDRIN OF THE GROUP CONSISTING OF EPIHALOHYDRIN AND A GLYCEROL HALOHYDRIN OF THE FORMULA
References Cited (Backward Citations)
US2682515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |