US3900475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain phenobarbital salts
Assignee: Colgate Palmolive Co
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Filing: 1972-06-26
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Granted: 1975-08-19
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Expires: 1992-06-26
Abstract
Abstract Salts of phenobarbital having the formula wherein R is Y X , Y being a 2-thiouronium or N-phenyl-2thiouronium group or hexamethylenetetramine and X being bromine or chlorine, and R1 is hydrogen or R are disclosed. These compounds have central nervous system depressant activity.
Inventors
- 👤 Julius A Vida
- 👤 Mary L Hooker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:24
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/46; C07D239/60; C07D239/62; C07D239/64
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
6 words
A COMPOUND HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
6 words
A COMPOUND HAVING THE STRUCTURAL FORMULA
Claim 3
Dependent Claim
13 words
The compound of claim 1 wherein R1 is R and X is bromine.
Claim 4
Dependent Claim
10 words
The compound of claim 2 having the name 1,3-bis(2-thiouronium-S-methyl)-phenobarbital dibromide.
Claim 5
Dependent Claim
10 words
The compound of claim 2 having the name 1,3-bis-(N-phenyl-2-thiouronium-S-methyl)-phenobarbital dibromide.
Claim 6
Dependent Claim
13 words
The compound of claim 2 haviNg the name bis-(hexamethylenetetramine salt) of 1,3-bis-bromomethyl phenobarbital.
Claim 7
Dependent Claim
13 words
The compound of claim 1 wherein R1 is hydrogen and X is bromine.
Claim 8
Dependent Claim
10 words
The compound of claim 6 having the name 1-methyl-3-(2-thiouronium-S-methyl)-phenobarbital bromide.
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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |