US3899437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Denture cleaning composition containing phosphoric acid
Assignee: Individual
•
Filing: 1973-03-12
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Granted: 1975-08-12
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Expires: 1993-03-12
Abstract
Abstract Denture cleaning compositions comprising dilute aqueous solutions of orthophosphoric acid and a non-ionic detergent are disclosed. These compositions are modified to form slurry or pasty products by addition of diatomaceous earth, glycerine, and a xanthan gum.
Inventors
- 👤 Barrie F Regan
- 👤 Glen B Regan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:43
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/48; A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/24; A61K8/30; A61K8/40; A61K8/41; A61K8/416; A61Q; A61Q11/00; A61Q11/02; C11D3/02; C11D3/12; C11D3/124; C11D3/1246; C11D7/00; C11D7/02; C11D7/04; C11D7/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
58 words
A TOOTH AND DENTURE CLEANING COMPOSITION CONSISTING ESSENTIALLY OF 1-3% BY WEIGHT ORTHOPHOSPHORIC ACID, 0.25 TO 1.5% BY WEIGHT OF A NON-IONIC DETERGENT, 0.01 TO 0.04% BY WEIGHT OF A QUATERNARY AMMONIUM GERMICIDE, 5 TO 10% BY WEIGHT GLYCERINE, 25 TO 35% BY WEIGHT DIATOMACEOUS EARTH, 0.3 TO 1.5% BY WEIGHT OF XANTHAN GUM AND THE REMAINDER WATER.
Claim 2
Dependent Claim
58 words
A TOOTH AND DENTURE CLEANING COMPOSITION CONSISTING ESSENTIALLY OF 1-3% BY WEIGHT ORTHOPHOSPHORIC ACID, 0.25 TO 1.5% BY WEIGHT OF A NON-IONIC DETERGENT, 0.01 TO 0.04% BY WEIGHT OF A QUATERNARY AMMONIUM GERMICIDE, 5 TO 10% BY WEIGHT GLYCERINE, 25 TO 35% BY WEIGHT DIATOMACEOUS EARTH, 0.3 TO 1.5% BY WEIGHT OF XANTHAN GUM AND THE REMAINDER WATER.
Claim 3
Dependent Claim
23 words
A composition as defined in claim 1 containing a soluble fluoride in amount sufficient to constitute 1 to 3% of the total composition.
References Cited (Backward Citations)
US3652420A
Cited
US3518343A
Cited
US3655579A
Cited
US3822212A
Cited
US3733277A
Cited
US3785986A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |