US2653121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent waving of hair
Assignee: Individual
•
Filing: 1949-02-08
•
Granted: 1953-09-22
•
Expires: 1969-02-08
Abstract
No abstract record available.
Inventors
- 👤 Ernst O Schnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:27
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/04; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/30; A61K8/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A HAIR WAVE PREPARATION, IN THE FORM OF A SOLID PRODUCT, SAID COMPOSITION CONSISTING ESSENTIALLY, AS THE ACTIVE INGREDIENTS, OF CALCIUM THIOGLYCOLATE AND A WATER-SOLUBLE ACID-REACTING AMMONIUM SALT WHOSE ANION FORMS WATER-SOLUBLE CALCIUM SALTS, PREPARATION, WHEN DISSOLVED IN WATER TO FORM A DILUTE SOLUTION, PRODUCINGAN INITIAL PH IN EXCESS OF 9 BUT NOT EXCEEDING ABOUT 10.5.
Claim 2
Dependent Claim
56 words
A HAIR WAVE PREPARATION, IN THE FORM OF A SOLID PRODUCT, SAID COMPOSITION CONSISTING ESSENTIALLY, AS THE ACTIVE INGREDIENTS, OF CALCIUM THIOGLYCOLATE AND A WATER-SOLUBLE ACID-REACTING AMMONIUM SALT WHOSE ANION FORMS WATER-SOLUBLE CALCIUM SALTS, PREPARATION, WHEN DISSOLVED IN WATER TO FORM A DILUTE SOLUTION, PRODUCINGAN INITIAL PH IN EXCESS OF 9 BUT NOT EXCEEDING ABOUT 10.5.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
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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) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |