US3694547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-dandruff hair preparation
Assignee: Lever Brothers Co
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Filing: 1971-11-05
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Granted: 1972-09-26
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Expires: 1991-11-05
Abstract
Abstract This invention relates to hair preparations having activity against dandruff, containing as an anti-dandruff agent the proteolytic enzyme material rennet. One form of the hair preparations is a lotion, for example an aqueous or alcoholic solution or emulsion of rennet having a pH of from 2 to 9. Rennet may also be incorporated in shampoos, creams, sprays and gels.
Inventors
- 👤 Ernst Ludwig Forsthoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:10
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/64; A61K8/66; A61Q; A61Q5/00; A61Q5/006; A61Q5/02; Y; Y10; Y10S; Y10S424/00; Y10S424/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
18 words
A hair preparation according to claim 1 wherein the rennet is in aqueous or alcoholic emulsion or solution.
Claim 2
Dependent Claim
13 words
A hair preparation according to claim 1 in the form of a lotion.
Claim 3
Dependent Claim
13 words
A hair preparation according to claim 1 in the form of a shampoo.
Claim 4
Dependent Claim
17 words
A hair preparation according to claim 1 having a pH of from about 2 to about 9.
Claim 5
Dependent Claim
17 words
A hair preparation according to claim 5 having a pH of from about 4.5 to about 7.
Claim 6
Dependent Claim
18 words
A hair preparation according to claim 6 having a pH buffered at from about 5 to about 6.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |