US5094248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device and method for simple visual measurement of the amount of sebum present on human skin
Assignee: Gillette Co LLC
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Filing: 1991-07-01
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Granted: 1992-03-10
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Expires: 2011-07-01
Abstract
Abstract A hydrophilic sebum collecting device including a strip of hydrophilic open celled microporous polymeric film. Also provided is a method for the quantification of sebum in a patch of skin by applying a hydrophilic open celled microporous polymeric film to the patch of skin such that the film is retained in sebum collecting contact therewith. The film is retained in sebum collecting contact for a period of about 5 to 30 seconds and at a predetermined pressure. The film is eventually removed from the patch of skin and placed over a scaled background such that the amount of sebum collected by the film can be determined by comparison with the scaled background.
Inventors
- 👤 Antoine Kawam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:33
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/44; A61B5/441; A61B5/445; A61B10/00; A61B10/0045; A61B10/0064; A61B5/0059; A61B5/446
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
47 words
A sebum collecting device, comprising (1) a strip of hydrophilic open celled microporous polymeric film of size and shape adapted for contact with skin and the collection of sebum and (2) an application/retaining means for retaining said film in sebum collecting contact with a patch of skin.
Claim 2
Dependent Claim
47 words
A sebum collecting device, comprising (1) a strip of hydrophilic open celled microporous polymeric film of size and shape adapted for contact with skin and the collection of sebum and (2) an application/retaining means for retaining said film in sebum collecting contact with a patch of skin.
Claim 3
Dependent Claim
17 words
The device of claim 1, wherein said film thickness is from about 0.01 to about 0.05 mm.
Claim 4
Dependent Claim
16 words
The device of claim 2, wherein said film has a film thickness of about 0.025 mm.
Claim 5
Dependent Claim
18 words
The device of claim 1, wherein said film has a porosity of about 30 to about 60 percent.
Claim 6
Dependent Claim
18 words
The device of claim 4, wherein said film has a porosity of about 45 to about 50 percent.
Claim 7
Dependent Claim
17 words
The device of claim 1, wherein said film has a surface tension of greater than 50 dynes/cm.
Claim 8
Dependent Claim
17 words
The device of claim 6, wherein said film has a surface tension of greater than 60 dynes/cm.
Claim 9
Dependent Claim
19 words
The device of claim 7, wherein said film has an opacity of from about 60 to about 75 percent.
Claim 10
Dependent Claim
21 words
The device of claim 1, wherein said application/retaining means is a contact adhesive applied to a contacting side of said film.
Claim 11
Dependent Claim
18 words
The device of claim 9, wherein said adhesive is distributed uniformly along a contacting side of said film.
Claim 12
Dependent Claim
30 words
The device of claim 9, wherein said adhesive is distributed in a continuous bond around the periphery of said film, surrounding a zone which is substantially free from said adhesive.
Claim 13
Dependent Claim
27 words
The device of claim 9, wherein said adhesive is distributed at opposing ends of said film with an intermediate zone which is substantially free from said adhesive.
Claim 14
Dependent Claim
14 words
The device of claim 1, wherein said application retaining means is a circular band.
Claim 15
Dependent Claim
13 words
The device of claim 1, wherein said application/retaining means is a mechanical applicator/holder.
Claim 16
Dependent Claim
16 words
The device of claim 1, further comprising a coating means for protecting said film from contamination.
Claim 17
Dependent Claim
12 words
The device of claim 15, wherein said coating means contains a background.
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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) | 1995-03-10 | 1995-09-09 | 1996-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-10 | 1999-09-09 | 2000-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-10 | 2003-09-09 | 2004-03-10 | $7700.00 | Window Closed / Lapsed |