Patent JPH11241008A successfully refreshed from Google Patents.
Patent US3305590A successfully refreshed from Google Patents.
US3305590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decomposition of alpha hydroperoxy derivatives of alkyl substituted aromatic hydrocarons
Assignee: Universal Oil Products Co
•
Filing: 1963-07-15
•
Granted: 1967-02-21
•
Expires: 1983-07-15
Abstract
No abstract record available.
Inventors
- 👤 Ernest L Pollitzer
- 👤 James J Louvar
- 👤 George E Illingworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:22
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A METHOD OF DECOMPOSING AN ALPHA HYDROPEROXY DERIVATIVE OF AN ALKYL AROMATIC HYDROCARBON AND FORMING A PHENOL, WHICH METHOD COMPRISES HEATING SAID HYDROPEROXY DERIVATIVE IN CONTACT WITH A CATALYTIC COMPOSITE CONSISTING OF SILICA AND ALUMINA AND COMPRISING FROM ABOUT 60% TO ABOUT 95% SILICA AND HAVING A SURFACE AREA OF AT LEAST 100 SQUARE METERS PER GRAM.
Claim 2
Independent Claim
57 words
A METHOD OF DECOMPOSING AN ALPHA HYDROPEROXY DERIVATIVE OF AN ALKYL AROMATIC HYDROCARBON AND FORMING A PHENOL, WHICH METHOD COMPRISES HEATING SAID HYDROPEROXY DERIVATIVE IN CONTACT WITH A CATALYTIC COMPOSITE CONSISTING OF SILICA AND ALUMINA AND COMPRISING FROM ABOUT 60% TO ABOUT 95% SILICA AND HAVING A SURFACE AREA OF AT LEAST 100 SQUARE METERS PER GRAM.
References Cited (Backward Citations)
US2718530A
Cited
US2683751A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |