US2641618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation of 1,1-diphenyl-2,2-dimethyl-propanol-1
Assignee: Merck and Co Inc
•
Filing: 1950-02-16
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Granted: 1953-06-09
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Expires: 1970-02-16
Abstract
No abstract record available.
Inventors
- 👤 Edward F Rogers
- 👤 Horace D Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:46
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; C07C1/22; C07C2523/00; C07C2523/16; C07C2523/24; C07C2523/26; C07C2523/70; C07C2523/72; C07C2523/76; C07C2523/84; C07C2523/85; C07C2523/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
THE PROCESS THAT COMPRISES REACTING 1,1-DIPHENYL-282-DIMETHYL-PROPANOL-1 WITH HYDROGEN IN THE PRESENCE OF A COPPER CHROMITE CATALYST, AND RECOVERING THE 1,1-DIPHENYL-2,2-DIMETHYL-PROPANE THUS FORMED.
Claim 2
Dependent Claim
22 words
THE PROCESS THAT COMPRISES REACTING 1,1-DIPHENYL-282-DIMETHYL-PROPANOL-1 WITH HYDROGEN IN THE PRESENCE OF A COPPER CHROMITE CATALYST, AND RECOVERING THE 1,1-DIPHENYL-2,2-DIMETHYL-PROPANE THUS FORMED.
References Cited (Backward Citations)
US2106735A
Cited
US2114717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |