Patent US3616442A successfully refreshed from Google Patents.
US3264358A
Expired / Lapsed
US
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Bisphenols
Assignee: BASF Schweiz AG
•
Filing: 1960-11-18
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Granted: 1966-08-02
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Expires: 1980-11-18
Abstract
No abstract record available.
Inventors
- 👤 Webb Reginald Francis
- 👤 Hinton Ian Geoffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:26
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/001; C07C37/003; C07C37/11; C07C37/14; C07C39/00; C07C39/205; C07C39/21; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/18; C08G59/20; C08G59/22; C08G59/24; C08G59/245; C08G63/00; C08G63/02; C08G63/12; C08G63/123; C08G63/133; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
13 words
A PROCESS FOR THE PRODUCTION OF DIMERIC PISOPROPENYL PHENOL HAVING THE ISOMERIC FORMULAE:
Claim 2
Dependent Claim
13 words
A PROCESS FOR THE PRODUCTION OF DIMERIC PISOPROPENYL PHENOL HAVING THE ISOMERIC FORMULAE:
Claim 3
Dependent Claim
16 words
THE PRODUCT OF THE PROCESS OF CLAIM 1 CONSISTING OF THE ISOMERIC FORMS HAVING THE FORMULAE
References Cited (Backward Citations)
US2979534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |