US3879534A
Expired / Lapsed
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Method for treating dandruff
Assignee: Diamalt AG
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Filing: 1972-07-17
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Granted: 1975-04-22
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Expires: 1992-07-17
Abstract
Abstract WHEREIN R1 is a carboxy-loweralkyl group and R2 is hydrogen or an alkyl group having 1 to 5 carbon atoms are effective in controlling scalp dandruff. Hydantoin derivatives having the formula
Inventors
- 👤 Paul Rambacher
- 👤 Siegfried Make
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:51
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/72; C07D233/76; Y; Y10; Y10S; Y10S424/00; Y10S424/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
24 words
A METHOD FOR TREATING DANDRUFF WHICH COMPRISES APPLYING TO THE SCALP A COMPOSITION CONTAINING A THERAPEUTICALLY EFFECTIVE AMOUNT OF A HYDANTION HAVING THE FORMULA
Claim 2
Independent Claim
24 words
A METHOD FOR TREATING DANDRUFF WHICH COMPRISES APPLYING TO THE SCALP A COMPOSITION CONTAINING A THERAPEUTICALLY EFFECTIVE AMOUNT OF A HYDANTION HAVING THE FORMULA
Claim 3
Independent Claim
24 words
A method for treating dandruff which comprises applying to the scalp a composition containing a therapeutically effective amount of a hydantoin having the formula
Claim 4
Independent Claim
24 words
A method for treating dandruff which comprises applying to the scalp a composition containing a therapeutically effective amount of a hydantoin having the formula
Claim 5
Dependent Claim
12 words
A method according to claim 1 wherein the hydantoin has the formula
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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |