Patent US2986550A successfully refreshed from Google Patents.
US2986550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polynuclear epoxide resin
Assignee: Bakelite Ltd
•
Filing: 1956-05-18
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Granted: 1961-05-30
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Expires: 1976-05-18
Abstract
No abstract record available.
Inventors
- 👤 Davis Anthony Charles
- 👤 Hunter Robert Fergus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:32
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/24; C08G59/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
DIGLYCIDYL ETHER OF BIS-HYDROXYBENZYLBENZENE HAVING THE FORMULA:
Claim 2
Dependent Claim
7 words
DIGLYCIDYL ETHER OF BIS-HYDROXYBENZYLBENZENE HAVING THE FORMULA:
References Cited (Backward Citations)
US2142007A
Cited
US2076624A
Cited
US2581367A
Cited
US2543489A
Cited
US2658885A
Cited
US2716099A
Cited
US2714098A
Cited
FR1106304A
Cited
US2811564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |