Patent US3001972A successfully refreshed from Google Patents.
US3001972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy resins with high heat distortions
Assignee: PPG Industries Inc
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Filing: 1959-01-26
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Granted: 1961-09-26
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Expires: 1979-01-26
Abstract
No abstract record available.
Inventors
- 👤 Roger M Christenson
- 👤 Wismer Marco
- 👤 William R Hydro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:11
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/11; C07C37/18; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/28; C07D303/30; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/063; C08G59/18; C08G59/20; C08G59/32; C08G59/3218
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A RESINOUS POLYGLYCIDYL ETHER OF A POLYPHENYOL OF THE STRUCTURE
Claim 2
Dependent Claim
10 words
A RESINOUS POLYGLYCIDYL ETHER OF A POLYPHENYOL OF THE STRUCTURE
References Cited (Backward Citations)
US2865887A
Cited
GB789392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |