Patent US1920917A successfully refreshed from Google Patents.
US2602785A
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Compositions containing glycidyl polyethers of dihydric phenols and polyvinyl acetate
Assignee: Shell Development Co
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Filing: 1950-09-30
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Granted: 1952-07-08
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Expires: 1970-09-30
Abstract
No abstract record available.
Inventors
- 👤 Quentin T Wiles
- 👤 Daniel W Elam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:18
CPC Classifications
C; C08; C08L; C08L63/00; Y; Y10; Y10S; Y10S238/00; Y10S238/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A COMPOSITION COMPRISING A GLYCIDYL POLYETHER OF A DIHYDRIC PHENOL HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN 1.0 IN ADMIXTURE WITH A MINOR PROPORTION OF POLYVINYL ESTER OF A SATURATED FATTY ACID.
Claim 2
Dependent Claim
31 words
A COMPOSITION COMPRISING A GLYCIDYL POLYETHER OF A DIHYDRIC PHENOL HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN 1.0 IN ADMIXTURE WITH A MINOR PROPORTION OF POLYVINYL ESTER OF A SATURATED FATTY ACID.
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) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |