US4624273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigmented composition
Assignee: Atlas Pencil Co Ltd
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Filing: 1984-11-13
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Granted: 1986-11-25
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Expires: 2004-11-13
Abstract
Abstract Cosmetic pencils having cores consisting of water-set mixtures of plaster of paris, mica or other laminar material and pigment or color are disclosed. The mixtures are between 30 wgt % and 75 wgt % plaster of paris. The pencils may be made either by pouring water-based slurries of the mixtures into hollow pencil cases, or by introducing pre-formed cores into two-part cases which are subsequently secured together. The pencils can be easily sharpened and may contain a wide range of additives such as preservatives and bacterioistats.
Inventors
- 👤 Raymond Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:58
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/23; A61Q; A61Q1/00; A61Q1/02; A61Q1/10; A61K2800/00; A61K2800/80; A61K2800/87; A61K2800/872
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
56 words
A pigmented or coloured composition which when mixed with water forms a set product adapted to be transferred to the skin as a cosmetic, the composition comprising a pigment or colouring material, plaster of paris and a material having a laminar structure, the composition containing from about 30 to about 75 wgt % plaster of paris.
Claim 2
Dependent Claim
56 words
A pigmented or coloured composition which when mixed with water forms a set product adapted to be transferred to the skin as a cosmetic, the composition comprising a pigment or colouring material, plaster of paris and a material having a laminar structure, the composition containing from about 30 to about 75 wgt % plaster of paris.
Claim 3
Dependent Claim
17 words
The composition of claim 1, containing from about 35 to about 70 wgt % plaster of paris.
Claim 4
Dependent Claim
17 words
The composition of claim 1, containing from about 40 to about 70 wgt % plaster of paris.
Claim 5
Dependent Claim
13 words
The composition of claim 1, containing about 45 wgt % plaster of paris.
Claim 6
Dependent Claim
17 words
The composition of claim 1, containing at least about 10 wgt % material having a laminar structure.
Claim 7
Dependent Claim
17 words
The composition of claim 1, containing at least about 20 wgt % material having a laminar structure.
Claim 8
Dependent Claim
18 words
The composition of claim 1, containing no more than about 50 wgt % material having a laminar structure.
Claim 9
Dependent Claim
14 words
The composition of claim 1, wherein said material having a laminar structure is mica.
Claim 10
Dependent Claim
26 words
The composition of claim 1, wherein the particle size of said laminated material is in the range of from about 5 μm to about 10 μm.
Claim 11
Dependent Claim
26 words
The composition of claim 1, wherein the particle size of said laminar material is in the range of from about 5 μm to about 40 μm.
Claim 12
Dependent Claim
18 words
The composition of claim 1, containing from about 5 to about 30 wgt % pigment or colouring material.
Claim 13
Dependent Claim
19 words
The composition of claim 1, further comprising up to about 20 wgt % calcium sulphate dihydrate and/or barium sulphate.
Claim 14
Dependent Claim
30 words
The composition of claim 1, further comprising at least one additive material selected from emollients, fillers, extenders, preservatives, bacterioistats and accelerating and retarding agents for setting of plaster of paris.
Claim 15
Dependent Claim
23 words
The composition of claim 13, wherein the total amount of said additive material is less than about 5 wgt % of the composition.
Claim 16
Dependent Claim
15 words
The composition of claim 1, wherein said pigment or colouring material comprises an opacifying agent.
Claim 17
Dependent Claim
26 words
The composition of claim 15, wherein said material having a laminar structure is pre-coated with said opacifying agent before combination with the remainder of the composition.
Claim 18
Dependent Claim
15 words
The set product of a mixture of water and a composition according to claim 1.
Claim 19
Dependent Claim
15 words
A cosmetic pencil having a core comprising a set product as claimed in claim 17.
Claim 20
Dependent Claim
56 words
A method of making a cosmetic pencil, comprising the steps of forming a mixture of water and a pigmented composition as claimed in claim 1 into a pencil core, causing or allowing the mixture to set, assembling the set mixture with first and second pencil case parts and securing the parts together to form the pencil.
Claim 21
Dependent Claim
48 words
A method of making a cosmetic pencil, comprising the steps of forming a mixture of water and a pigmented composition as claimed in claim 1, introducing the mixture into a pre-formed pencil case and causing or allowing the mixture to set in the case to form the pencil.
Claim 22
Dependent Claim
16 words
The method of claim 20, further comprising the step of sharpening one end of the pencil.
References Cited (Backward Citations)
US2409000A
Cited
JPS5525368A
Cited
US4413921A
Cited
WO1982000444A1
Cited
JPS5958067A
Cited
JPS5959759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |