Patent US3144300A successfully refreshed from Google Patents.
US3144300A
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US
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Treatment of keratinous fibers
Assignee: Compagnie de Saint Gobain SA
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Filing: 1961-11-15
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Granted: 1964-08-11
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Expires: 1981-11-15
Abstract
No abstract record available.
Inventors
- 👤 Cosnard Jean-Claude
- 👤 Trezain Claude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:41
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/35; D06M13/355; D06M13/358; D06M13/364
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A METHOD OF PREVENTING THE FELTING AND SHRINKING OF KERATINOUS FIBERS WHICH COMPRISES DEGREASING THE FIBERS, IMMERSING THEM IN AN AQUEOUS ACID SOLUTION OF SODIUM N-N DICHLORO-1-3-5 ISOCYANURATE HAVING A PH OF ABOUT 2, AND WASHING AND DRYING THE TREATED FIBERS.
Claim 2
Independent Claim
41 words
A METHOD OF PREVENTING THE FELTING AND SHRINKING OF KERATINOUS FIBERS WHICH COMPRISES DEGREASING THE FIBERS, IMMERSING THEM IN AN AQUEOUS ACID SOLUTION OF SODIUM N-N DICHLORO-1-3-5 ISOCYANURATE HAVING A PH OF ABOUT 2, AND WASHING AND DRYING THE TREATED FIBERS.
References Cited (Backward Citations)
US2993747A
Cited
US2913460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |