US3855406A
Expired / Lapsed
US
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Thiaxanthene derivatives useful for treating peptic ulcers
Assignee: Boots Co PLC
•
Filing: 1973-04-19
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Granted: 1974-12-17
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Expires: 1993-04-19
Abstract
Abstract N-Hydroxy-N-9-thiaxanthenylurea, its esters and substituted derivatives thereof are useful in the treatment of peptic ulcer. Pharmaceutical compositions thereof and method of treating therewith also disclosed.
Inventors
- 👤 S Adams
- 👤 B Armitage
- 👤 N Bristow
- 👤 B Heathcote
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:23
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/38
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
21 words
A THERAPEUTIC COMPOSITION USEFUL FOR TREATING PEPTIC ULCERS WHICH COMPRISES AN EFFECTIVE ANTI-SECRETORY AMOUNT OF A THIAXANTHEN COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
21 words
A THERAPEUTIC COMPOSITION USEFUL FOR TREATING PEPTIC ULCERS WHICH COMPRISES AN EFFECTIVE ANTI-SECRETORY AMOUNT OF A THIAXANTHEN COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
13 words
The composition of claim 1 wherein Ro is hydRogen and R1 is hydroxy.
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein Ro is alkoxy and R1 is hydroxy.
Claim 5
Dependent Claim
13 words
The composition of claim 1 in the form of a tablet or capsule.
Claim 6
Dependent Claim
12 words
The composition of claim 4 wherein the said composition is enteric coated.
Claim 7
Dependent Claim
15 words
The composition of claim 4 wherein said composition contains 25-500 mg. of the thiaxanthen compound.
Claim 8
Dependent Claim
11 words
The composition of claim 1 in the form of a suppository.
Claim 9
Dependent Claim
11 words
The composition of claim 1 wherein said thiaxanthen compound is N-hydroxy-N-9-thiaxanthenylurea.
Claim 10
Dependent Claim
30 words
The composition of claim 1 in the form of an enteric coated tablet or capsule useful for treating peptic ulcer comprising 25-500 mg. of N-hydroxy-N-9-thiaxanthenylurea and a pharmaceutically acceptable excipient.
Claim 11
Independent Claim
29 words
A method of treating peptic ulcer which comprises administering to a patient in need of said treatment a therapeutically effective anti-secretory amount of a thiaxanthen compound of the formula
Claim 12
Independent Claim
29 words
A method of treating peptic ulcer which comprises administering to a patient in need of said treatment a therapeutically effective anti-secretory amount of a thiaxanthen compound of the formula
Claim 13
Dependent Claim
12 words
The method of claim 10 wherein said thiaxanthen compound is administered orally.
Claim 14
Dependent Claim
20 words
The method of claim 10 wherein said thiaxanthen compound is administered at a dosage rate of 0.025-2 grams per day.
Claim 15
Dependent Claim
11 words
The method of claim 10 wherein said thiaxanthen compound is N-hydroxy-N-9-thiaxanthenylurea.
References Cited (Backward Citations)
US3481930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |