US5669916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of hair removal
Assignee: General Hospital Corp
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Filing: 1994-09-28
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Granted: 1997-09-23
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Expires: 2014-09-28
Abstract
Abstract The invention features a method of removing a hair, involving mechanically or chemically removing the hair to expose the follicle of the hair, and then treating the follicle to inhibit its ability to regenerate a hair. Removing the hair facilitates the uptake of a follicle-inactivating compound and thus allows for long-term inhibition of hair growth.
Inventors
- 👤 Richard Rox Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:13
CPC Classifications
A; A61; A61Q; A61Q9/00; A61Q9/04; A61N; A61N5/00; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/203; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/44; A61K8/49; A61K8/494; A61K8/58; A61N1/00; A61N1/18; A61N1/20; A61N1/30; A61B2018/00315; A61B2018/00452; A61B2018/00476; A61K2800/00; A61K2800/40; A61K2800/42; A61K2800/43; A61K2800/434; A61K2800/58; A61N5/06; A61N5/0613; A61N5/062
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
46 words
A method of removing a hair from the skin of a mammal, said method comprising a) mechanically or chemically removing said hair from its follicle to expose the follicle of said hair, and then b) treating said follicle to inhibit its ability to regenerate a hair.
Claim 2
Independent Claim
46 words
A method of removing a hair from the skin of a mammal, said method comprising a) mechanically or chemically removing said hair from its follicle to expose the follicle of said hair, and then b) treating said follicle to inhibit its ability to regenerate a hair.
Claim 3
Dependent Claim
12 words
The method of claim 1, wherein step a) is accomplished by waxing.
Claim 4
Dependent Claim
22 words
The method of claim 1, wherein step b) comprises application of a photosensitizer to said follicle, followed by activation of said photosensitizer.
Claim 5
Dependent Claim
28 words
The method of claim 3, wherein said photosensitizer is selected from the group consisting of aminolevulinic acid, methylene blue, nile blue-A derivatives, phthalocyanines, porphyrin derivatives, chlorins, and purpurins.
Claim 6
Dependent Claim
11 words
The method of claim 4, wherein said photosensitizer is aminolevulinic acid.
Claim 7
Dependent Claim
11 words
The method of claim 4, wherein said photosensitizer is methylene blue.
Claim 8
Dependent Claim
12 words
The method of claim 4, wherein said photosensitizer is chloroaluminum sulfonated phthalocyanine.
Claim 9
Dependent Claim
17 words
The method of claim 1, wherein step b) comprises application of an electric current to the skin.
Claim 10
Dependent Claim
17 words
The method of claim 1, wherein step b) comprises application of a mild toxin to the follicle.
Claim 11
Dependent Claim
21 words
The method of claim 3, wherein said photosensitizer is a precursor compound which is converted into a photosensitizer in living cells.
Claim 12
Dependent Claim
24 words
The method of claim 1, wherein step b) comprises application of a photothermal sensitizer to said follicle, followed by activation of said photothermal sensitizer.
Claim 13
Dependent Claim
12 words
The method of claim 11, wherein said photothermal sensitizer is indocyanine green.
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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) | 2000-09-22 | 2001-03-24 | 2001-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-22 | 2005-03-24 | 2005-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-22 | 2009-03-24 | 2009-09-23 | $7700.00 | Window Closed / Lapsed |