US4379753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair care compositions
Assignee: Procter and Gamble Co
•
Filing: 1981-05-28
•
Granted: 1983-04-12
•
Expires: 2001-05-28
Abstract
Abstract Metal salts of pyridinethione useful in shampoos, creme rinses and other hair care compositions to deliver antidandruff benefits while not detracting as much as previous pyridinethione salts from the compositions' aesthetics. Compositions containing such salts are also included.
Inventors
- 👤 Raymond E. Bolich, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:26
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/89; A; A61; A61K; A61K8/00; A61K8/02; A61K8/18; A61K8/30; A61K8/49; A61K8/4906; A61K8/4933; A61Q; A61Q5/00; A61Q5/006; A61Q5/02; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
52 words
Hair care compositions which contain from about 0.2% to about 4.0% of heavy metal, magnesium or aluminum pyridinethione salt crystals which are predominantly flat platelets having a mean sphericity less than about 0.65 and a median equivalent spherical diameter based on volume of at least about 2μ but less than about 15μ.
Claim 2
Dependent Claim
52 words
Hair care compositions which contain from about 0.2% to about 4.0% of heavy metal, magnesium or aluminum pyridinethione salt crystals which are predominantly flat platelets having a mean sphericity less than about 0.65 and a median equivalent spherical diameter based on volume of at least about 2μ but less than about 15μ.
Claim 3
Dependent Claim
26 words
A hair care composition according to claim 1 in the form of a shampoo which additionally contains from about 10% to about 50% of a surfactant.
Claim 4
Dependent Claim
14 words
A shampoo according to claim 2 wherein the surfactant is an alkyl sulfate salt.
Claim 5
Dependent Claim
32 words
A shampoo according to claim 3 in the form of a lotion, which additionally contains from about 35% to about 90% water and wherein the alkyl sulfate salt is ammonium alkyl sulfate.
Claim 6
Dependent Claim
19 words
A shampoo according to claim 4 which additionally contains from about 0.1% to about 6.0% of a pearlescent material.
Claim 7
Dependent Claim
37 words
A hair care composition according to claim 1 in the form of a creme rinse and which additionally contains from about 0.1% to about 5.0% of a cationic surfactant and from about 95% to about 99% water.
Claim 8
Dependent Claim
20 words
A creme rinse according to claim 6 which additionally contains from about 0.5% to about 5.0% of a pearlescent material.
Claim 9
Dependent Claim
27 words
A creme rinse according to claim 7 wherein the cationic surfactant is selected from the group consisting of stearalkonium chloride, ditallow dimethyl ammonium chloride and mixtures thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-11 | 1986-10-11 | 1987-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-11 | 1990-10-11 | 1991-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-11 | 1994-10-11 | 1995-04-12 | $7700.00 | Window Closed / Lapsed |