Patent US2768207A successfully refreshed from Google Patents.
US2768207A
Expired / Lapsed
US
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Unitary process for the production of 2-benzylphenyl beta-dimethylaminoethyl ether dihydrogen citrate
Assignee: Bristol Laboratories Inc
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Filing: 1951-02-05
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Granted: 1956-10-23
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Expires: 1971-02-05
Abstract
No abstract record available.
Inventors
- 👤 Lee C Cheney
- 👤 Stephen B Binkley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:59
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/28; C07D213/30; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/40; C07D307/42; C07D333/00; C07D333/02; C07D333/04; C07D333/06; C07D333/14; C07D333/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A PROCESS FOR THE PREPARATION OF A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
11 words
A PROCESS FOR THE PREPARATION OF A COMPOUND HAVING THE FORMULA
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) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |