Patent US2990832A successfully refreshed from Google Patents.
US2990832A
Expired / Lapsed
US
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Process of pretreating hair for cold waving
Assignee: Sales Affiliates Inc
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Filing: 1957-02-04
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Granted: 1961-07-04
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Expires: 1977-02-04
Abstract
No abstract record available.
Inventors
- 👤 Everett G Mcdonough
- 👤 Walter W Edman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:35
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/44; A61K8/19; A61K8/24; A61K8/41; A61Q; A61Q5/00; A61Q5/04; A61K2800/00; A61K2800/40; A61K2800/51
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE PROCESS OF PERMANENTLY CHANGING THE CONFIGURATION OF HAIR COMPRISING TREATING THE HAIR WITH A COMPOSITION CONTAINING THE COMBINATION OF ABOUT 0.7% TO ABOUT 4.0% OF A CHELATING AGENT SELECTED FROM THE GROUP CONSISTING OF A WATER SOLUBLE SALT OF ETHYLENEDIAMINETETRAACETIC ACID AND A WATER SOLUBLE POLYPHOSPHATE, AND ABOUT 1.5% TO 6% OF A MILD ALKALINE BUFFERING AGENT SELECTED FROM THE GROUP CONSISTING OF TRIS(HYDROXYMETHYL) AMINOMETHANE AND SALTS OF WEAK ACIDS, SAID COMPOSITION HAVING AN ALKALINE PH LESS THAN PH 10, AND WRAPPING THE TREATED HAIR WITHOUT ANY ADDITIONAL PRIOR TREATMENT OF SAID HAIR IN A NEW CONFIGURATION, AND APPLYING THE DESIRED MERCAPTAN WAVING LOTION TO THE WRAPPED HAIR.
Claim 2
Dependent Claim
109 words
THE PROCESS OF PERMANENTLY CHANGING THE CONFIGURATION OF HAIR COMPRISING TREATING THE HAIR WITH A COMPOSITION CONTAINING THE COMBINATION OF ABOUT 0.7% TO ABOUT 4.0% OF A CHELATING AGENT SELECTED FROM THE GROUP CONSISTING OF A WATER SOLUBLE SALT OF ETHYLENEDIAMINETETRAACETIC ACID AND A WATER SOLUBLE POLYPHOSPHATE, AND ABOUT 1.5% TO 6% OF A MILD ALKALINE BUFFERING AGENT SELECTED FROM THE GROUP CONSISTING OF TRIS(HYDROXYMETHYL) AMINOMETHANE AND SALTS OF WEAK ACIDS, SAID COMPOSITION HAVING AN ALKALINE PH LESS THAN PH 10, AND WRAPPING THE TREATED HAIR WITHOUT ANY ADDITIONAL PRIOR TREATMENT OF SAID HAIR IN A NEW CONFIGURATION, AND APPLYING THE DESIRED MERCAPTAN WAVING LOTION TO THE WRAPPED HAIR.
References Cited (Backward Citations)
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US2564722A
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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) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |