US3269973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoset resins from poly (methylol)-diaromatic ether compounds
Assignee: Dow Chemical Co
•
Filing: 1961-05-26
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Granted: 1966-08-30
•
Expires: 1981-05-26
Abstract
No abstract record available.
Inventors
- 👤 James D Doedens
- 👤 Earl H Rosenbrock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:52
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A THERMOSET COMPOSITION OF MATTER OBTAINED BY HEATING A COMPOSITION COMPRISING POLY(METHYLOL)DIAROMATIC ETHER COMPOSITION ABOVE ITS MELTING POINT IN THE PRESENCE OF A SMALL BUT EFFECTIVE AMOUNT OF A DEHYDRATING CATALYST, SAID POLY(METHYLOL)DIAROMATIC ETHER COMPOSITION BEING CHARACTERIZED BY THE GENERAL FORMULA:
Claim 2
Dependent Claim
41 words
A THERMOSET COMPOSITION OF MATTER OBTAINED BY HEATING A COMPOSITION COMPRISING POLY(METHYLOL)DIAROMATIC ETHER COMPOSITION ABOVE ITS MELTING POINT IN THE PRESENCE OF A SMALL BUT EFFECTIVE AMOUNT OF A DEHYDRATING CATALYST, SAID POLY(METHYLOL)DIAROMATIC ETHER COMPOSITION BEING CHARACTERIZED BY THE GENERAL FORMULA:
References Cited (Backward Citations)
US2606929A
Cited
US2636875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |