US3944661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrices containing iridescent flakes
Assignee: Colgate Palmolive Co
•
Filing: 1974-08-05
•
Granted: 1976-03-16
•
Expires: 1994-08-05
Abstract
Abstract A dentifrice containing small proportions of mother of pearl flakes or other iridescent flakes.
Inventors
- 👤 Daniel Colodney
- 👤 John J. Steinke
- 👤 Robert Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:08
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/02; A61K8/0241; A61K8/0254; A61K8/18; A61K8/19; A61K8/25; A61K8/26; A61K8/29; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412; A61K2800/42; A61K2800/43; A61K2800/436; A61K2800/60; A61K2800/61; A61K2800/62; A61K2800/621
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
38 words
A toothpaste containing about 0.1 to 5% of non-toxic iridescent mother of pearl flakes, which flakes are about 10-50 microns thick and about 149 to 590 microns in particle size and are dispersed in a transparent toothpaste matrix.
Claim 2
Dependent Claim
38 words
A toothpaste containing about 0.1 to 5% of non-toxic iridescent mother of pearl flakes, which flakes are about 10-50 microns thick and about 149 to 590 microns in particle size and are dispersed in a transparent toothpaste matrix.
Claim 3
Dependent Claim
14 words
The toothpaste claimed in claim 1 wherein said toothpaste contains a dental polishing agent.
Claim 4
Dependent Claim
44 words
The toothpaste claimed in claim 1 wherein said mother of pearl flakes are present in amount of about 11/2 to 3% by weight and said toothpaste when extruded as a ribbon 4 to 8mm thick is clear with visible spaced light refracting sparkling dots.
Claim 5
Dependent Claim
25 words
The toothpaste claimed in claim 2 wherein said polishing agent is selected from the group consisting of porous amorphous silicic anhydride and complex sodium aluminosilicate.
Claim 6
Independent Claim
65 words
A method for treating dental enamel to reduce stain which forms thereon comprising brushing the surface of said human dental enamel bearing stain which forms thereon with a dentifrice containing a stain reducing amount of non-toxic iridescent flakes of mother of pearl, which flakes are 10-50 microns thick and have a particle size distribution between 149-590 microns for a time sufficient to reduce said stain.
Claim 7
Independent Claim
65 words
A method for treating dental enamel to reduce stain which forms thereon comprising brushing the surface of said human dental enamel bearing stain which forms thereon with a dentifrice containing a stain reducing amount of non-toxic iridescent flakes of mother of pearl, which flakes are 10-50 microns thick and have a particle size distribution between 149-590 microns for a time sufficient to reduce said stain.
Claim 8
Dependent Claim
40 words
The method for treating dental enamel as in claim 5 in which said flakes are dispersed in a toothpaste which when extruded as a ribbon about 4 to 8 mm thick is clear with visible spaced light refractive sparkling dots.
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) | 1979-03-16 | 1979-09-15 | 1980-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-16 | 1983-09-15 | 1984-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-16 | 1987-09-15 | 1988-03-16 | $7700.00 | Window Closed / Lapsed |