Patent US2823233A successfully refreshed from Google Patents.
US2823233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary salts of substituted diphenylalkanoic acid amides
Assignee: Bristol Laboratories Inc
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Filing: 1954-03-08
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Granted: 1958-02-11
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Expires: 1974-03-08
Abstract
No abstract record available.
Inventors
- 👤 Speeter Merrill Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:13
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/14; C07D295/145; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF Y - CARBAMYL - Y,Y - DIPHENYLPROPYL - TRIMETHYLAMMONIUM HALIDES, Y - CARBAMYL - Y,Y - DIPHENYLPROPYL - DIMETHYLETHYLAMMONIUM HALIDES, Y-CARBAMYL-Y,Y-DIPHENYLPROPYLMETHYLDIETHYLAMMONIUM HALIDES, Y-CARBAMYL-Y,Y-DIPHENYLPROPYL-TRIETHYLAMMONIUM HALIDES AND Y-CARBAMYL-Y,YDIPHENYLPROPYL-METHYLDIISOPROPYLAMMONIUM HALIDES, SAID HALIDES BEING SELECTED FROM THE GROUP CONSISTING OF CHLORIDE, BROMIDE AND IODIDE.
Claim 2
Dependent Claim
48 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF Y - CARBAMYL - Y,Y - DIPHENYLPROPYL - TRIMETHYLAMMONIUM HALIDES, Y - CARBAMYL - Y,Y - DIPHENYLPROPYL - DIMETHYLETHYLAMMONIUM HALIDES, Y-CARBAMYL-Y,Y-DIPHENYLPROPYLMETHYLDIETHYLAMMONIUM HALIDES, Y-CARBAMYL-Y,Y-DIPHENYLPROPYL-TRIETHYLAMMONIUM HALIDES AND Y-CARBAMYL-Y,YDIPHENYLPROPYL-METHYLDIISOPROPYLAMMONIUM HALIDES, SAID HALIDES BEING SELECTED FROM THE GROUP CONSISTING OF CHLORIDE, BROMIDE AND IODIDE.
References Cited (Backward Citations)
BE504085A
Cited
US2009144A
Cited
FR882283A
Cited
FR884740A
Cited
US2437545A
Cited
FR1054240A
Cited
US2647926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |