US4738841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of thioredoxin, thioredoxin-derived, or thioredoxin-like dithiol peptides in hair care preparations
Assignee: Repligen Corp
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Filing: 1986-08-25
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Granted: 1988-04-19
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Expires: 2006-08-25
Abstract
Abstract The subject invention enables a more efficient management of hair by providing a novel preparation for waving, straightening, softening, or removing hair, employing as a key ingredient the compound thioredoxin or a thioredoxin-derived, or thioredoxin-like, dithiol peptide in combination with thioglycolic acid compounds. This invention allows hair to be treated at a lower pH to minimize hair damage when waving, straightening, or softening the hair; when used to remove hair, objectionable odors of commercial depilatories are minimized or eliminated.
Inventors
- 👤 Vincent P. Pigiet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:35
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/64; A61Q; A61Q5/00; A61Q5/04; A61Q9/00; A61Q9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A process for softening human or animal hair which comprises applying to said human or animal hair a composition comprising a thioglycolic acid compound at a concentration of about 0.01M to about 0.2M, and a thioredoxin or thioredoxin-derived, or thioredoxin-like, dithiol peptide at a concentration of about 1 nmole/ml to about 100 nmole/ml.
Claim 2
Dependent Claim
53 words
A process for softening human or animal hair which comprises applying to said human or animal hair a composition comprising a thioglycolic acid compound at a concentration of about 0.01M to about 0.2M, and a thioredoxin or thioredoxin-derived, or thioredoxin-like, dithiol peptide at a concentration of about 1 nmole/ml to about 100 nmole/ml.
References Cited (Backward Citations)
JPS56103106A
Cited
EP0083095A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-19 | 1991-10-19 | 1992-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-19 | 1995-10-19 | 1996-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-19 | 1999-10-19 | 2000-04-19 | $7700.00 | Window Closed / Lapsed |