US4273758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrice and its method of manufacture
Assignee: Individual
•
Filing: 1979-11-06
•
Granted: 1981-06-16
•
Expires: 1999-11-06
Abstract
Abstract The present invention relates to dentifrice and its method of manufacture whereby the dentifrice containing tannic acid efficacious for the prevention of outbreak of tooth decay, pyorrhea and gingivitis can be obtained by means by adding what is obtainable through adding tannic acid to hot water whereto glycerine is added after it has become cooled down to the materials for the dentifrice and mixing them together.
Inventors
- 👤 Weilin Liau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:35
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/60; A61K8/602; A61Q; A61Q11/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
37 words
A method for the manufacture of a dentifrice composition which comprises adding tannic acid to hot water, cooling the mixture, adding glycerine to the cooled mixture, adding the remaining essential ingredients for a dentifrice composition and mixing.
Claim 2
Independent Claim
37 words
A method for the manufacture of a dentifrice composition which comprises adding tannic acid to hot water, cooling the mixture, adding glycerine to the cooled mixture, adding the remaining essential ingredients for a dentifrice composition and mixing.
Claim 3
Dependent Claim
12 words
A dentifrice composition produced in accordance with the method of claim 1.
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) | 1984-06-15 | 1984-12-15 | 1985-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-15 | 1988-12-15 | 1989-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-15 | 1992-12-15 | 1993-06-16 | $7700.00 | Window Closed / Lapsed |