US4985198A
Expired / Lapsed
US
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Tooth-adhesive compounds
Assignee: GC Corp
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Filing: 1989-03-07
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Granted: 1991-01-15
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Expires: 2009-03-07
Abstract
Abstract A tooth-adhesive compound is expressed in terms of the following general formula: ##STR1## wherein R 1 is a hydrogen atom or a methyl group, and R 2 may or may not be present; and if present, R 2 is an alkylene group having 1 to 4 carbon atoms or a --CH 2 --CH 2 ).sub.η O--CH 2 --CH 2 -- group in which n=1 or 2, and a substituent containing R 1 and R 2 is located at the o-, m- or p-position with respect to the carboxyl group bonded to the phenyl group.
Inventors
- 👤 Tadashi Hirasawa
- 👤 Ikuro Harashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:20
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
46 words
A dental adhesive comprising a compound of the formula: ##STR4## wherein R 1 is a hydrogen atom or a methyl group, and the substituent containing R 1 is located at the o-, m- or p-position with respect to the carboxyl group bonded to the phenyl group.
Claim 2
Dependent Claim
46 words
A dental adhesive comprising a compound of the formula: ##STR4## wherein R 1 is a hydrogen atom or a methyl group, and the substituent containing R 1 is located at the o-, m- or p-position with respect to the carboxyl group bonded to the phenyl group.
Claim 3
Dependent Claim
12 words
The dental adhesive of claim 1, wherein the compound is 2-methacryloyloxybenzoic acid.
Claim 4
Dependent Claim
12 words
The dental adhesive of claim 1, wherein the compound is 3-methacryloyloxybenzoic acid.
Claim 5
Dependent Claim
12 words
The dental adhesive of claim 1, wherein the compound is 4-methacryloyloxybenzoic acid.
References Cited (Backward Citations)
US4144283A
Cited
JPS5411149A
Cited
US4212989A
Cited
EP0074708B1
Cited
JPS5915468A
Cited
JPS59129278A
Cited
JPH0970643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-14 | 1994-07-16 | 1995-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-14 | 1998-07-16 | 1999-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-14 | 2002-07-16 | 2003-01-15 | $7700.00 | Window Closed / Lapsed |