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US4781913A
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US
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Pharmaceutical composition for use in desensitizing hypersensitive dentin
Assignee: Individual
•
Filing: 1987-04-02
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Granted: 1988-11-01
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Expires: 2007-04-02
Abstract
Abstract Disclosed is a pharmaceutical composition for use in desensitizing hypersensitive dentin or eliminating odontalgia comprising N-methacryloyl aminosalicylic acid as an active ingredient. The composition may further include an unsaturated compound and a polymerization initiator optionally for retaining the densensitizing effect.
Inventors
- 👤 Eiichi Masuhara
- 👤 Hiroyasu Hosoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:14
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/60; A61K31/74; A61K31/765; A61K31/78; A61K6/00; A61K6/20; A61K6/30; A61K6/60; A61K6/62; A61P; A61P1/00; A61P1/02; A61P25/00; A61P25/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
34 words
A dental compositon comprising an effective amount for use in desensitizing hypersensitive dentin or eliminating odontalgia in a patient in need thereof of N-methacryloyl aminoscalicylic acid and a pharmaceutically acceptable carrier or diluent therefor.
Claim 2
Dependent Claim
34 words
A dental compositon comprising an effective amount for use in desensitizing hypersensitive dentin or eliminating odontalgia in a patient in need thereof of N-methacryloyl aminoscalicylic acid and a pharmaceutically acceptable carrier or diluent therefor.
Claim 3
Dependent Claim
15 words
A pharmaceutical composition of claim 1 wherein the N-methacryloyl aminosalicylic acid is N-methacryloyl 5-aminosalicylic acid.
Claim 4
Dependent Claim
26 words
A pharmaceutical composition of claim 2 wherein the carrier or diluent is selected from the group consisting of acetone, ethyl alcohol, ethyl acetate and methyl methacrylate.
Claim 5
Dependent Claim
35 words
A method of desensitizing hypersensitive dentin or eliminating odontalgia in a patient in need thereof which comprises applying to the surface of an exposed dentin the composition of claim 1 in a therapeutically effective amount.
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) | 1991-11-01 | 1992-05-02 | 1992-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-01 | 1996-05-02 | 1996-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-01 | 2000-05-02 | 2000-11-01 | $7700.00 | Window Closed / Lapsed |