US3128259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic resins containing phenolic hydroxyl groups
Assignee: Dow Chemical Co
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Filing: 1959-08-03
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Granted: 1964-04-07
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Expires: 1979-08-03
Abstract
No abstract record available.
Inventors
- 👤 Lawrence F Sonnabend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:24
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A RESIN CONTAINING PHENOLIC HYDROXYL GROUPS, SAID RESIN BEING PRODUCED BY THE REACTION OF, AS SOLE ESSENTIAL REACTANTS, (A), AT LEAST TWO NUCLEAR HYDROGENS, ACTIVATED BY A PHENOLIC HYDROXYL, OF AHYDROXYLATED ARYL COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
36 words
A RESIN CONTAINING PHENOLIC HYDROXYL GROUPS, SAID RESIN BEING PRODUCED BY THE REACTION OF, AS SOLE ESSENTIAL REACTANTS, (A), AT LEAST TWO NUCLEAR HYDROGENS, ACTIVATED BY A PHENOLIC HYDROXYL, OF AHYDROXYLATED ARYL COMPOUND HAVING THE FORMULA
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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |