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US3759944A
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Isothioureas and their derivatives
Assignee: Smith Kline & French Laboratories Ltd
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Filing: 1970-10-14
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Granted: 1973-09-18
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Expires: 1990-10-14
Abstract
Abstract S-(Heterocyclic-alkyl)isothioureas and a method of inhibiting histamine activity.
Inventors
- 👤 Black J Whyte
- 👤 G Durant
- 👤 J Emmett
- 👤 C Ganellin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:43
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D233/64; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/28; C07D213/32; C07D249/00; C07D249/02; C07D249/08; C07D309/00; C07D309/02; C07D309/08; C07D309/10; C07D309/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
24 words
A compound according to claim 1 in which the ring formed by A taken together with the carbon and nitrogen atoms shown is imidazoly.
Claim 2
Dependent Claim
11 words
A compound according to claim 1 in which R3 is hydrogen.
Claim 3
Dependent Claim
10 words
A compound according to claim 1 which is N,N''-dimethyl-S-(2-(4(5)-imidazolyl)ethyl)isothiourea dihydrobromide.
Claim 4
Dependent Claim
10 words
A compound according to claim 1 which is S-(4-(4(5)-imidazolyl)butyl)isothiourea dihydrobromide.
References Cited (Backward Citations)
US3558640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |