US4748991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stick-like body of compact powder
Assignee: Schwan Stabilo Cosmetics GmbH and Co KG
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Filing: 1986-05-22
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Granted: 1988-06-07
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Expires: 2006-05-22
Abstract
Abstract A powder compact material in the form of a stick for cosmetic purposes is made up of powder-like base materials and if necessary additions of binders, lubricants and materials increasing adhesion compacted or bonded together as a body which keeps its form. For stopping the end or outer face of the stick-like body becoming clogged with moisture and sebum on use (so that clean powder compact material would have to be uncovered by cutting, this wasting the material) the compact stick contains as part of the present invention, a particle material, whose particles are harder than the particles of the base materials. The hardness of the particle material may preferably be equal to at least 4.0 on the Mohs' hardness scale. A particle size of 10 to 50 microns and an outer face of the particles which as far as possible is jagged or otherwise rough is responsible for useful effects. Particle materials which may be used are more specially pumice powder, quartz flour, aluminum oxide (corundum) metal carbides, metals and the like, and mixtures thereof. The level of the particle material is more specifically 20 to 40% of the overall weight of the compact material.
Inventors
- 👤 Hans J. Hofman
- 👤 Werner Bruechert
- 👤 Matthias Hempel
- 👤 Klaus Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:24
CPC Classifications
A; A45; A45D; A45D40/00; A45D40/20; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/25; A61K8/26; A61Q; A61Q1/00; A61Q1/02; A61Q1/10; A61Q1/12; A61K2800/00; A61K2800/80; A61K2800/87; A61K2800/872
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
169 words
An improved cosmetic, which comprises: a stick-like compact powder body in compressed form for applying powder to skin of a user by brusing a contact face of said compact powder body directly against said skin of said user, said compact powder body comprised of one or more base materials selected from the group consisting of starch, talcum, kaolin, calcium carbonate and ica, pigments, lubricants and said compact powder body, said improved compact powder body a particulate material distinct from any of said base materials and selected from the groups consisting of silica, silca derivatives, aluminum oxides and mixtures thereof, said particulate material having an irregular form and a rough surface and of a particle size of between 10 and 100 microns and a hardness in excess of the hardness of any of said base materials of said compact powder body whereby brushing of said compact powder body against said skin of said user prevents clogging of said contact face of said compact powder body with moisture and sebum thereof.
Claim 2
Dependent Claim
169 words
An improved cosmetic, which comprises: a stick-like compact powder body in compressed form for applying powder to skin of a user by brusing a contact face of said compact powder body directly against said skin of said user, said compact powder body comprised of one or more base materials selected from the group consisting of starch, talcum, kaolin, calcium carbonate and ica, pigments, lubricants and said compact powder body, said improved compact powder body a particulate material distinct from any of said base materials and selected from the groups consisting of silica, silca derivatives, aluminum oxides and mixtures thereof, said particulate material having an irregular form and a rough surface and of a particle size of between 10 and 100 microns and a hardness in excess of the hardness of any of said base materials of said compact powder body whereby brushing of said compact powder body against said skin of said user prevents clogging of said contact face of said compact powder body with moisture and sebum thereof.
Claim 3
Dependent Claim
27 words
The improved cosmetic stick-like compact powder body as defined in claim 1 wherein said particulate material is of a particle size of from 30 to 40 microns.
Claim 4
Dependent Claim
28 words
The improved cosmetic stick-like compact powder body as defined in claim 1 wherein said particulate materials is present in an amount of up to about 40% by weight.
Claim 5
Dependent Claim
28 words
The improved cosmetic stick-like compact powder body as defined in claim 1 wherein the particulate material is present in an amount of from 20% to 30% by weight.
Claim 6
Dependent Claim
29 words
The improved cosmetic stick-like compact powder body as defined in claim 1 wherein said particulate material is of a hardness of at least 4.0 on the MOHS hardness scale.
Claim 7
Dependent Claim
19 words
The improved cosmetic stick-like compact powder body as defined in claim 1 wherein said particulate material is quartz flour.
Claim 8
Dependent Claim
19 words
The improved cosmetic stick-like compact powder body as defined in claim 1 wherein said particulate material is aluminum silicate.
Claim 9
Dependent Claim
162 words
An improved cosmetic, which comprises: a stick-like comapct powder body in compressed form for applying powder to skin of a user by brushing a contact face of said compact powder body directly against said skin of said user, said compact powder body comprised of one or more base materials selected from the group consisting of starch, talcum, kaolin, calcium carbonate and mica, pigments, lubricants and a particulate material distinct from any of said base materials and selected from the group consisting of silica, silica derivatives, aluminum oxides and mixtures thereof, said particulate material having an irregular and jagged form and a cracked surface and of a particle size of between 10 and 100 microns and a hardnes in excess of the hardness of any of said base materials of said compact powder body whereby brushing of said compact powder body against said skin of said user prevents clogging of said contact face of said compact powder body with moisture and sebum thereof.
Claim 10
Dependent Claim
162 words
An improved cosmetic, which comprises: a stick-like comapct powder body in compressed form for applying powder to skin of a user by brushing a contact face of said compact powder body directly against said skin of said user, said compact powder body comprised of one or more base materials selected from the group consisting of starch, talcum, kaolin, calcium carbonate and mica, pigments, lubricants and a particulate material distinct from any of said base materials and selected from the group consisting of silica, silica derivatives, aluminum oxides and mixtures thereof, said particulate material having an irregular and jagged form and a cracked surface and of a particle size of between 10 and 100 microns and a hardnes in excess of the hardness of any of said base materials of said compact powder body whereby brushing of said compact powder body against said skin of said user prevents clogging of said contact face of said compact powder body with moisture and sebum thereof.
Claim 11
Dependent Claim
28 words
The improved cosmetic stick-like compact powder body as defined in claim 8 wherein said particulate material is present in an amount of up to about 40% by weight.
Claim 12
Dependent Claim
28 words
The improved cosmetic stick-like compact powder body as defined in claim 8 wherein the particulate material is present in an amount of from 20% to 30% by weight.
Claim 13
Dependent Claim
29 words
The improved cosmetic stick-like compact powder body as defined in claim 8 wherein said particulate material is of a hardness of at least 4.0 on the MOHS hardness scale.
Claim 14
Dependent Claim
19 words
The improved cosmetic stick-like compact powder body as defined in claim 8 wherein said particulate material is quartz flour.
Claim 15
Dependent Claim
19 words
The improved cosmetic stick-like compact powder body as defined in claim 8 wherein said particulate material is pumice powder.
Claim 16
Dependent Claim
22 words
The improved cosmetic stick-like compact powder body as defined in claim 13 wherein said pumice powder is obtained by milling solid pumice.
References Cited (Backward Citations)
US2623003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-07 | 1991-12-07 | 1992-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-07 | 1995-12-07 | 1996-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-07 | 1999-12-07 | 2000-06-07 | $7700.00 | Window Closed / Lapsed |