US2850534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of compounds used in the stabilization of organic compounds
Assignee: Universal Oil Products Co
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Filing: 1956-06-22
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Granted: 1958-09-02
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Expires: 1976-06-22
Abstract
No abstract record available.
Inventors
- 👤 William K T Gleim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:49
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0021; C11B5/0035; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C09; C09K; C09K15/00; C09K15/04; C09K15/06; C09K15/08; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/04; C10M2207/046; C10N; C10N2050/00; C10N2050/10; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS FOR THE PREPARATION OF CONDENSATION PRODUCTS OF AN ALLYLOXY PHENOL AND A BENZENE COMPOUND SELECTED FROM THE GROUP CONSISTING OF DI- AND TRI-HYDROXY BENZENES WHICH COMPRISES CONDENSING SAID PHENOL AND SAID BENZENE COMPOUND IN THE PRESENCE OF FORMIC ACID AT A TEMPERATURE FROM ABOUT 50*C. TO ABOUT 100*C., AND RECOVERING THE RESULTANT CONDENSATION PRODUCTS.
Claim 2
Dependent Claim
56 words
A PROCESS FOR THE PREPARATION OF CONDENSATION PRODUCTS OF AN ALLYLOXY PHENOL AND A BENZENE COMPOUND SELECTED FROM THE GROUP CONSISTING OF DI- AND TRI-HYDROXY BENZENES WHICH COMPRISES CONDENSING SAID PHENOL AND SAID BENZENE COMPOUND IN THE PRESENCE OF FORMIC ACID AT A TEMPERATURE FROM ABOUT 50*C. TO ABOUT 100*C., AND RECOVERING THE RESULTANT CONDENSATION PRODUCTS.
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) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |