Patent US4940578A successfully refreshed from Google Patents.
US4940578A
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Hair preparation
Assignee: Kao Corp
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Filing: 1988-06-03
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Granted: 1990-07-10
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Expires: 2008-06-03
Abstract
Abstract A hair preparation comprises an oil-absorptive polymer of a vinyl monomer having a solubility parameter of 7 to 10, said polymer being porous and having a squalene absorption of at least 1 ml/g. It may further contain an anti-dandruff agent. The hair preparation may also comprise an anti-dandruff agent and a different oil-absorptive substance.
Inventors
- 👤 Toru Yoshihara
- 👤 Jiro Kawase
- 👤 Yukihiro Fukuyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:58
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/006; A61K; A61K8/00; A61K8/02; A61K8/0241; A61K8/0279; A61K8/18; A61K8/19; A61K8/25; A61K8/72; A61K8/73; A61K8/731; A61K8/81; A61K8/8105; A61K8/8117; A61Q5/008; A61Q5/02; A61Q5/12; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
73 words
A hair preparation which comprises particles of an oil-absorptive polymer of a vinyl monomer having a solubility parameter of 7 to 10, said vinyl monomer being an ester of a higher alcohol having 8 to 24 carbon atoms, said particles having an average particle diameter of 0.005 to 30 μm and a pore volume of at least 0.1 ml/g, said polymer having a squalene absorption of at least 1 ml/g, and a carrier.
Claim 2
Dependent Claim
73 words
A hair preparation which comprises particles of an oil-absorptive polymer of a vinyl monomer having a solubility parameter of 7 to 10, said vinyl monomer being an ester of a higher alcohol having 8 to 24 carbon atoms, said particles having an average particle diameter of 0.005 to 30 μm and a pore volume of at least 0.1 ml/g, said polymer having a squalene absorption of at least 1 ml/g, and a carrier.
Claim 3
Dependent Claim
26 words
A hair preparation as claimed in claim 1, which comprises 0.05 to 5 percent by weight of the oil-absorptive polymer and the balance of the carrier.
Claim 4
Dependent Claim
32 words
A hair preparation as claimed in claim 1, in which said oil-absorptive polymer has 90 percent by weight or more of its particles in the size range of 0.005 to 30 microns.
Claim 5
Dependent Claim
15 words
A hair preparation as claimed in claim 1, in which said oil-absorptive polymer is crosslinked.
Claim 6
Dependent Claim
21 words
A hair preparation as claimed in claim 1, in which said polymer has a squalene absorption of at least 2 ml/g.
Claim 7
Dependent Claim
31 words
A hair preparation as claimed in claim 1, in which said particles are dispersed in a liquid selected from the group consisting of water, a lower alcohol and a mixture thereof.
Claim 8
Dependent Claim
17 words
A hair preparation as claimed in claim 1, in which said hair preparation contains an anti-dandruff agent.
Claim 9
Dependent Claim
16 words
A hair preparation as claimed in claim 1, in which said vinyl monomer is stearyl methacrylate.
Claim 10
Dependent Claim
22 words
A hair preparation as claimed in claim 1, in which said polymer is composed of monomer units of stearyl methacrylate and t-butylstyrene.
Claim 11
Dependent Claim
86 words
A hair preparation which comprises 0.01 to 10 percent by weight of an anti-dandruff agent, 0.05 to 5 percent by weight of an oil-absorptive substance in the form of fine particles and having a squalene absorption of at least 0.5 ml/g in the dried state and the balance of a carrier, said oil-absorptive substance being selected from the group consisting of a bentonite comprising montmorillonite and a porous vinyl ester, said vinyl ester being an ester of a higher alcohol having 8 to 24 carbon atoms.
Claim 12
Dependent Claim
86 words
A hair preparation which comprises 0.01 to 10 percent by weight of an anti-dandruff agent, 0.05 to 5 percent by weight of an oil-absorptive substance in the form of fine particles and having a squalene absorption of at least 0.5 ml/g in the dried state and the balance of a carrier, said oil-absorptive substance being selected from the group consisting of a bentonite comprising montmorillonite and a porous vinyl ester, said vinyl ester being an ester of a higher alcohol having 8 to 24 carbon atoms.
Claim 13
Dependent Claim
62 words
A hair preparation as claimed in claim 10, in which said oil-absorptive substance is a porous vinyl polymer of a vinyl monomer having a solubility of 7 to 10, said particles have an average particle diameter of 0.005 to 30 μm and a pore volume of at least 0.1 ml/g. and said polymer has a squalene absorption of at least 1 ml/g.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-07-09 | 1994-01-08 | 1994-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-09 | 1998-01-08 | 1998-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-09 | 2002-01-08 | 2002-07-10 | $7700.00 | Window Closed / Lapsed |