US4591502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressing aid for cosmetic powders
Assignee: PRESPERSE Inc
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Filing: 1982-11-24
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Granted: 1986-05-27
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Expires: 2002-11-24
Abstract
Abstract The compressing aid consists of particles of a synthetic saturated hydrocarbon wax having an average molecular formula of C 48 H 98 , an average molecular mass of about 700, a minimum congealing point of about 204° F. and an average particle size of about 10 microns. For greater ease in dispersion during blending of ingredients, the wax particles may be coated with 0.1 to 1.0% by weight of a lubricant such as dimethyl polysiloxane and low viscosity esters of C 10 to C 18 fatty acids or alcohols such as isopropyl myristate, lauryl lactate and ethylhexyl palmitate.
Inventors
- 👤 Mitchell L. Schlossman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:37
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/64; A61K8/645; A61K8/19; A61K8/26; A61K8/31; A61K8/33; A61K8/37; A61K8/72; A61K8/84; A61K8/89; A61K8/891; A61Q; A61Q1/00; A61Q1/12; A61Q15/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
94 words
A compressing aid for cosmetic pressed powders, said aid consisting essentially of particles of a synthetic saturated hydrocarbon wax having an average molecular formula of C 48 H 98 , an average molecular mass of about 700, a minimum congealing point of about 204° F., and an average particle size of about 10 microns, said wax particles being coated with an amount of lubricant equal to from about 0.1 to 1.0% of the weight of said wax, said lubricant selected from the group consisting of dimethyl polysiloxane, isopropyl myristate, lauryl lactate and ethylhexyl palmitate.
Claim 2
Dependent Claim
94 words
A compressing aid for cosmetic pressed powders, said aid consisting essentially of particles of a synthetic saturated hydrocarbon wax having an average molecular formula of C 48 H 98 , an average molecular mass of about 700, a minimum congealing point of about 204° F., and an average particle size of about 10 microns, said wax particles being coated with an amount of lubricant equal to from about 0.1 to 1.0% of the weight of said wax, said lubricant selected from the group consisting of dimethyl polysiloxane, isopropyl myristate, lauryl lactate and ethylhexyl palmitate.
Claim 3
Dependent Claim
86 words
In a cosmetic pressed powder comprising a powder component, a pigment component and a compressing aid, the improvement which comprises a compressing aid consisting essentially of particles of a synthetic saturated hydrocarbon wax having an average molecular formula of C 48 H 98 , an average molecular mass of about 700, a minimum congealing point of about 204° F. and an average particle size of about 10 microns, and wherein the amount of said wax used is effective to impart compressibility and adhesion to the powder.
Claim 4
Dependent Claim
86 words
In a cosmetic pressed powder comprising a powder component, a pigment component and a compressing aid, the improvement which comprises a compressing aid consisting essentially of particles of a synthetic saturated hydrocarbon wax having an average molecular formula of C 48 H 98 , an average molecular mass of about 700, a minimum congealing point of about 204° F. and an average particle size of about 10 microns, and wherein the amount of said wax used is effective to impart compressibility and adhesion to the powder.
Claim 5
Dependent Claim
31 words
The pressed powder of claim 2, wherein the compressing aid is used in the amount of about 5 to 10% by weight based on the total weight of the pressed powder.
Claim 6
Dependent Claim
47 words
The compressed powder of claim 2, wherein said wax particles are coated with an amount of lubricant equal to from about 0.1 to 1.0% of the weight of said wax, said lubricant selected from the group consisting of dimethyl polysiloxane, isopropyl myristate, lauryl lactate and ethylhexyl palmitate.
Claim 7
Dependent Claim
47 words
The pressed powder of claim 2 wherein the powder component is at least one selected from the group consisting of talc, mica, and titanium dioxide coated mica and the pigment component is at least one selected from the group consisting of iron oxide pigments and organic lakes.
Claim 8
Dependent Claim
47 words
The pressed powder of claim 4, wherein the powder component is at least one selected from the group consisting of talc, mica and titanium dioxide coated mica and the pigment component is at least one selected from the group consisting of iron oxide pigments and organic lakes.
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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) | 1989-05-26 | 1989-11-25 | 1990-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-26 | 1993-11-25 | 1994-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-26 | 1997-11-25 | 1998-05-27 | $7700.00 | Window Closed / Lapsed |