US3894147A
Expired / Lapsed
US
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Method and composition for inhibiting calculus
Assignee: Colgate Palmolive Co
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Filing: 1973-03-02
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Granted: 1975-07-08
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Expires: 1993-03-02
Abstract
Abstract Calculus formation can be inhibited by contacting the teeth with the reaction product of a higher fatty alcohol having from about 8 to about 14 carbon atoms with phosphorus pentoxide. The anticalculus agents can be incorporated into a variety of oral preparations, including dental creams, mouthwashes, and the like.
Inventors
- 👤 Tayseer Georg Bahouth
- 👤 Administrator By Zaher Bahouth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:47
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/55; A61Q; A61Q11/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
34 words
A METHOD OF INHIBITING CALCULUS FORMATION BY CONTACTING THE TEETH WITH AN EFFECTIVE AMOUNT OF AT LEAST 0.1% OF A DIALKYL PYROPHOSPHATE HAVING FROM ABOUT 8 TO 14 CARBON ATOMS, IN THE ALKYL GROUPS.
Claim 2
Independent Claim
34 words
A METHOD OF INHIBITING CALCULUS FORMATION BY CONTACTING THE TEETH WITH AN EFFECTIVE AMOUNT OF AT LEAST 0.1% OF A DIALKYL PYROPHOSPHATE HAVING FROM ABOUT 8 TO 14 CARBON ATOMS, IN THE ALKYL GROUPS.
Claim 3
Dependent Claim
19 words
The method of claim 1 wherein the mole ratio of higher fatty alcohol to phosphorus pentoxide is about 2:1.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein the higher fatty alcohol is decyl alcohol.
Claim 5
Dependent Claim
13 words
The method of claim 1 whereini the higher fatty alcohol is dodecyl alcohol.
Claim 6
Dependent Claim
34 words
An oral composition for inhibiting calculus formation comprising a dentifrice and an effective amount of at least 0.1% of a dialkyl pyrophosphate having from about 8 to 14 carbon atoms in the alkyL groups.
Claim 7
Dependent Claim
34 words
An oral composition for inhibiting calculus formation comprising a dentifrice and an effective amount of at least 0.1% of a dialkyl pyrophosphate having from about 8 to 14 carbon atoms in the alkyL groups.
Claim 8
Dependent Claim
14 words
The oral composition of claim 5 wherein the higher fatty alcohol is decyl alcohol.
Claim 9
Dependent Claim
14 words
The oral composition of claim 5 wherein the higher fatty alcohol is dodecyl alcohol.
Claim 10
Dependent Claim
21 words
The oral composition of claim 5 wherein a substantially water-insoluble polishing agent is present and said oral composition is a dentifrice.
Claim 11
Dependent Claim
21 words
The oral composition of claim 5 wherein said reaction product is in a water-alcohol medium and said composition is a mouthwash.
References Cited (Backward Citations)
US3309274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |