US4515773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skin tanning composition and method
Assignee: Repligen Corp
•
Filing: 1983-07-05
•
Granted: 1985-05-07
•
Expires: 2003-07-05
Abstract
Abstract The subject invention concerns a novel, unobvious, and useful composition of matter and method for tanning the human epidermis. The composition comprises a suitable dye precursor and tyrosinase. These ingredients, when reacted together on the skin, result in the formation of melanin-like dyes which tan the skin.
Inventors
- 👤 Walter C. Herlihy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:26
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/34; A61K8/347; A61K8/19; A61K8/22; A61K8/40; A61K8/44; A61K8/445; A61K8/49; A61K8/4906; A61K8/4913; A61K8/492; A61K8/64; A61K8/66; A61Q; A61Q19/00; A61Q19/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
112 words
A skin tanning composition which imparts color to the human epidermis which comprises a cosmetic base in the form of a lotion, a cream or an ointment, an effective amount of a dye precursor selected from the group consisting of tyrosine, 3,4-dihydroxy phenylalanine (dopa), D-dopa, catechol, 5-hydroxyindole, tyramine, dopamine, m-aminophenol, o-aminophenol, p-aminophenol, 4-aminocatechol, 2-hydroxy-1,4-naphthaquinone (henna), 4-methyl catechol, 3-methyl catechol, 3-isopropyl 6-methyl catechol, 3,4-dihydroxybenzylamine, 3,4-dihydroxybenzoic acid, 1,2-dihydroxynaphthalene, gallic acid, resorcinol, 2-chloroaniline, p-chloroanisole, 2-amino-p-cresol, 4,5-dihydroxynaphthalene 2,7-disulfonic acid, o-cresol, m-cresol, p-cresol, or other related melanin precursors or analogs which are capable of being oxidized to tan, brown, or black compounds capable of dyeing the skin distributed through said base, and an effective amount of tyrosinase.
Claim 2
Dependent Claim
112 words
A skin tanning composition which imparts color to the human epidermis which comprises a cosmetic base in the form of a lotion, a cream or an ointment, an effective amount of a dye precursor selected from the group consisting of tyrosine, 3,4-dihydroxy phenylalanine (dopa), D-dopa, catechol, 5-hydroxyindole, tyramine, dopamine, m-aminophenol, o-aminophenol, p-aminophenol, 4-aminocatechol, 2-hydroxy-1,4-naphthaquinone (henna), 4-methyl catechol, 3-methyl catechol, 3-isopropyl 6-methyl catechol, 3,4-dihydroxybenzylamine, 3,4-dihydroxybenzoic acid, 1,2-dihydroxynaphthalene, gallic acid, resorcinol, 2-chloroaniline, p-chloroanisole, 2-amino-p-cresol, 4,5-dihydroxynaphthalene 2,7-disulfonic acid, o-cresol, m-cresol, p-cresol, or other related melanin precursors or analogs which are capable of being oxidized to tan, brown, or black compounds capable of dyeing the skin distributed through said base, and an effective amount of tyrosinase.
Claim 3
Dependent Claim
22 words
A composition, according to claim 1, wherein said dye precursor is present at a concentration of about 10 mM to about 1M.
Claim 4
Dependent Claim
21 words
A composition, according to claim 1, wherein said tyrosinase is present at a concentration of about 50 to about 5000 U/ml.
Claim 5
Independent Claim
115 words
A method of tanning the human epidermis which comprises applying to said epidermis a composition comprising a cosmetic base in the form of a lotion, a cream or an ointment, an effective amount of a dye precursor selected from the group consisting of tyrosine, 3,4-dihydroxy phenylalanine (dopa), D-dopa, catechol, 5-hydroxyindole, tyramine, dopamine, m-aminophenol, o-aminophenol, p-aminophenol, 4-aminocatechol, 2-hydroxyl-1,4-naphthaquinone (henna), 4-methyl catechol, 3-methyl catechol, 3-isopropyl 6-methyl catechol, 3,4-dihydroxybenzylamine, 3,4-dihydroxybenzoic acid, 1,2-dihydroxynaphthalene, gallic acid, resorcinol, 2-chloroaniline, p-chloroanisole, 2-amino-p-cresol, 4,5-dihydroxynaphthalene 2,7-disulfonic acid, o-cresol, m-cresol, p-cresol, or other related melanin precursors or analogs which are capable of being oxidized to tan, brown or black compounds capable of dyeing the skin distributed through said base, and an effective amount of tyrosinase.
Claim 6
Independent Claim
115 words
A method of tanning the human epidermis which comprises applying to said epidermis a composition comprising a cosmetic base in the form of a lotion, a cream or an ointment, an effective amount of a dye precursor selected from the group consisting of tyrosine, 3,4-dihydroxy phenylalanine (dopa), D-dopa, catechol, 5-hydroxyindole, tyramine, dopamine, m-aminophenol, o-aminophenol, p-aminophenol, 4-aminocatechol, 2-hydroxyl-1,4-naphthaquinone (henna), 4-methyl catechol, 3-methyl catechol, 3-isopropyl 6-methyl catechol, 3,4-dihydroxybenzylamine, 3,4-dihydroxybenzoic acid, 1,2-dihydroxynaphthalene, gallic acid, resorcinol, 2-chloroaniline, p-chloroanisole, 2-amino-p-cresol, 4,5-dihydroxynaphthalene 2,7-disulfonic acid, o-cresol, m-cresol, p-cresol, or other related melanin precursors or analogs which are capable of being oxidized to tan, brown or black compounds capable of dyeing the skin distributed through said base, and an effective amount of tyrosinase.
Claim 7
Dependent Claim
22 words
A method, according to claim 4, wherein said dye precursor is present at a concentration of about 10 mM to about 1M.
Claim 8
Dependent Claim
21 words
A method, according to claim 4, wherein said tyrosinase is present at a concentration of about 50 to about 5000 U/ml.
References Cited (Backward Citations)
US4390341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |