US4806173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cleaning dental appliances artificial dentures
Assignee: Individual
•
Filing: 1987-01-05
•
Granted: 1989-02-21
•
Expires: 2007-01-05
Abstract
Abstract A simple, effective and inexpensive method for cleansing dental appliances comprises the immersion of the artificial denture in a dilute aqueous solution of a carboxylic acid having the structure R(Z)COOH, where "R" is a hydrocarbon chain and "Z" is a hydroxy, a halo or aryl radical.
Inventors
- 👤 Sameeh S. Toukan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:54
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/036; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/36; A61K8/365; A61Q; A61Q11/00; A61Q11/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
45 words
A method of removing tartar and other oral deposits from artificial dentures which comprises soaking the dentures overnight in an aqueous solution of a carboxylic acid selected from the group consisting of mandelic acid, lactic acid and chlorinated acetic acid, then rinsing them with water.
Claim 2
Independent Claim
45 words
A method of removing tartar and other oral deposits from artificial dentures which comprises soaking the dentures overnight in an aqueous solution of a carboxylic acid selected from the group consisting of mandelic acid, lactic acid and chlorinated acetic acid, then rinsing them with water.
Claim 3
Dependent Claim
19 words
The method of claim 1, wherein the concentration of the acid in the aqueous solution is 3% to 10%.
Claim 4
Dependent Claim
15 words
The method according to claim 1 where the mandelic acid is in the anhydride form.
Claim 5
Dependent Claim
14 words
The method according to claim 1, where the chlorinated acetic acid is momochloroacetic acid.
Claim 6
Dependent Claim
16 words
The method according to claim 1, where the chlorinated acetic acid is in the anhydride form.
References Cited (Backward Citations)
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US4180467A
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Cited
US4459217A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-21 | 1992-08-22 | 1993-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-21 | 1996-08-22 | 1997-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-21 | 2000-08-22 | 2001-02-21 | $7700.00 | Window Closed / Lapsed |