Patent US4810195A successfully refreshed from Google Patents.
US4810195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conditioning liquids for tooth or bone matter
Assignee: Kulzer GmbH
•
Filing: 1988-04-15
•
Granted: 1989-03-07
•
Expires: 2008-04-15
Abstract
Abstract A solution for conditioning tooth or bone matter for filling, containing an acid and an amphoteric amino compound, the solution having a pH from 0.1 to 3.5.
Inventors
- 👤 Erik Asmussen
- 👤 Erik C. Munksgaard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:37
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/40
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
57 words
A solution for conditioning tooth or bone matter comprising an aqueous solution of an acid with a pK A value of less than +5 and of an amphoteric amino compound with a pK A value from 3.9 to 12.5 and a pK B value from 10.5 to 13.5, the solution having a pH from 0.1 to 3.5.
Claim 2
Dependent Claim
57 words
A solution for conditioning tooth or bone matter comprising an aqueous solution of an acid with a pK A value of less than +5 and of an amphoteric amino compound with a pK A value from 3.9 to 12.5 and a pK B value from 10.5 to 13.5, the solution having a pH from 0.1 to 3.5.
Claim 3
Dependent Claim
18 words
A solution according to claim 1, wherein the acid has a pK A value from -9 to +5.
Claim 4
Dependent Claim
29 words
A solution according to claim 1, wherein the amphoteric amino compound has a pK A value from 9.0 to 10.6 and a pK B value from 11.5 to 12.5.
Claim 5
Dependent Claim
13 words
A solution according to claim 1 having a pH from 1.5 to 2.5.
Claim 6
Dependent Claim
47 words
In the filling of a tooth with a plastic filling material wherein the dentin of the tooth to be filled is pretreated with a liquid, and the treated tooth is then filled, the improvement which comprises employing as the pretreatment liquid a solution according to claim 1.
Claim 7
Dependent Claim
17 words
The process according to claim 5, wherein between the pretreatment and the filling the tooth is coated.
References Cited (Backward Citations)
US3936939A
Cited
US4010545A
Cited
US4224023A
Cited
US4442125A
Cited
US4214006A
Cited
US4556561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |