US2948657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skin coloring compositions
Assignee: Individual
•
Filing: 1957-10-09
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Granted: 1960-08-09
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Expires: 1977-10-09
Abstract
No abstract record available.
Inventors
- 👤 Siccama Nicholas Bernard
- 👤 Donald J Chapman
- 👤 Harry E Hasselmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:03
CPC Classifications
A; A61; A61Q; A61Q19/00; A61Q19/04; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/4906; A61K8/4913; A61K8/492; A61K8/4986; A61K2800/00; A61K2800/40; A61K2800/42; A61K2800/43
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A SKIN COLORING LOTION COMPRISING AN AQUEOUS SLUTION OF A SUBSTANTIALLY COLORLESS LEUCO INDIGOID ESTER CONPOUND DEVELOPING COLOR UPON EXPOSURE TO ACTINIC LIGHT AND A WATER SOLUBLE FIXATIVE COMPOUND SELECTED FROM THE GROUP CONSISTING OF UREA, THIO-UREA, GUANIDINE, A LOWER ALKYL DERIVATIVE OF SAID UREA FIXATIVE COMPOUND SELECTED FROM LOWER ALKYL DERIVATIVE OF SAID UREA FIXATURE COMPOUND, A LOWER AMINO ACID, AND A SOLUBLE SALT OF A LOWER AMINO ACID, SAID COMPOSITION HAVING A PH IN THE RANGE OF ABOUT 7.5 TO 8.5.
Claim 2
Dependent Claim
83 words
A SKIN COLORING LOTION COMPRISING AN AQUEOUS SLUTION OF A SUBSTANTIALLY COLORLESS LEUCO INDIGOID ESTER CONPOUND DEVELOPING COLOR UPON EXPOSURE TO ACTINIC LIGHT AND A WATER SOLUBLE FIXATIVE COMPOUND SELECTED FROM THE GROUP CONSISTING OF UREA, THIO-UREA, GUANIDINE, A LOWER ALKYL DERIVATIVE OF SAID UREA FIXATIVE COMPOUND SELECTED FROM LOWER ALKYL DERIVATIVE OF SAID UREA FIXATURE COMPOUND, A LOWER AMINO ACID, AND A SOLUBLE SALT OF A LOWER AMINO ACID, SAID COMPOSITION HAVING A PH IN THE RANGE OF ABOUT 7.5 TO 8.5.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |