Patent US3218234A successfully refreshed from Google Patents.
US3218234A
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Treatment of proteinaceous materials with pyruvic acid or glyoxylic acid to remove peroxides
Assignee: WILMSMANN
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Filing: 1963-05-13
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Granted: 1965-11-16
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Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 Wilmsmann Hermann
- 👤 Konrad Eugen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:05
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/30; D06P3/305; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/36; A61K8/365; A61Q; A61Q5/00; A61Q5/06; A61Q5/08; A61Q5/10; D06L; D06L4/00; D06L4/10; D06L4/15; D06M; D06M13/00; D06M13/10; D06M13/184; D06M13/207; Y; Y10; Y10S; Y10S424/00; Y10S424/02; Y10S424/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A METHOD OF TREATING PEROXIDE-CONTAINING PROTEINACEOUS FIBERS SELECTED FROM THE GROUP CONSISTING OF HUMAN HAIR AND WOOL FOR THE REMOVAL OF PEROXIDE THEREFROM, COMPRISING THE STEP OF CONTACTING SAID PEROXIDE-CONTAINING FIBERS WITH A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF PYUVIC ACID, GLYOXYLIC ACID AND THEIR SODIUM POTASSIUM, AMMONIUM, CALCIUM, MAGNESIUM, ALUMINUM AND ORGANIC AMINE SALTS.
Claim 2
Independent Claim
56 words
A METHOD OF TREATING PEROXIDE-CONTAINING PROTEINACEOUS FIBERS SELECTED FROM THE GROUP CONSISTING OF HUMAN HAIR AND WOOL FOR THE REMOVAL OF PEROXIDE THEREFROM, COMPRISING THE STEP OF CONTACTING SAID PEROXIDE-CONTAINING FIBERS WITH A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF PYUVIC ACID, GLYOXYLIC ACID AND THEIR SODIUM POTASSIUM, AMMONIUM, CALCIUM, MAGNESIUM, ALUMINUM AND ORGANIC AMINE SALTS.
References Cited (Backward Citations)
US1210394A
Cited
US2892756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |