Patent US3696191A successfully refreshed from Google Patents.
US3696191A
Expired / Lapsed
US
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Dental creams containing enzymes
Assignee: Monsanto Co
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Filing: 1970-11-10
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Granted: 1972-10-03
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Expires: 1990-11-10
Abstract
Abstract This invention relates to dental creams of improved stability containing enzymes and certain surfactants and polishing agents. A dental cream of improved stability comprises, for example, a surfactant, a potassium salt of Beta -(sulfo acetamido) ethyl laurate; a polishing agent, dicalcium phosphate dihydrate and a neutral protease along with other conventional dental cream ingredients.
Inventors
- 👤 Lloyd E Weeks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:07
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/24; A61K8/30; A61K8/46; A61K8/466; A61K8/64; A61K8/66
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
35 words
A composition according to claim 1, wherein said neutral protease is present in an amount to provide about 3000 casein units of actiVity to about 40,000 casein units of activity per gram of said composition.
Claim 2
Dependent Claim
13 words
A composition according to claim 2 wherein said neutral protease is thermally stable.
Claim 3
Dependent Claim
26 words
A composition according to claim 2 wherein said surfactants are selected from the group consisting of the alkali metal salts of Beta -(sulfo acetamido) ethyl laurate.
Claim 4
Dependent Claim
19 words
A composition according to claim 4 wherein said surfactant is the potassium salt of Beta -(sulfo acetamido) ethyl laurate.
References Cited (Backward Citations)
US3194738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |