Patent US3306874A successfully refreshed from Google Patents.
US3306874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation of phenols
Assignee: General Electric Co
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Filing: 1962-07-24
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Granted: 1967-02-28
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Expires: 1982-07-24
Abstract
No abstract record available.
Inventors
- 👤 Allan S Hay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:38
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/38; C08G65/44; C07; C07C; C07C46/00; C07C46/02; C07C46/06; C07C46/08; C07F; C07F1/00; C07F1/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
THE PROCESS OF FORMING SELF-CONDENSATION PRODUCTS OF PHENOLS SELECTED FROM THE GROUP CONSISTING OF POLYPHENYLENE ETHERS AND DIPHENOQUINONES WHICH COMPRISES REACTING OXYGEN WITH A PHENOL HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
29 words
THE PROCESS OF FORMING SELF-CONDENSATION PRODUCTS OF PHENOLS SELECTED FROM THE GROUP CONSISTING OF POLYPHENYLENE ETHERS AND DIPHENOQUINONES WHICH COMPRISES REACTING OXYGEN WITH A PHENOL HAVING THE STRUCTURAL FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |