Patent US2737464A successfully refreshed from Google Patents.
US2737464A
Expired / Lapsed
US
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Treatment of fibrous materials
Assignee: Jacques Wolf & Co
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Filing: 1953-06-23
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Granted: 1956-03-06
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Expires: 1973-06-23
Abstract
No abstract record available.
Inventors
- 👤 William O Dawson
- 👤 Sellet Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:37
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/80; D06M11/82; C; C14; C14C; C14C3/00; C14C3/02; C14C3/08; C14C3/18; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/41; D06M15/59
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
73 words
IN TREATING A PROTEIN TEXTILE MATERIAL, THE METHOD WHICH COMPRISES APPLYING TO THE MATERIAL AN AQUEOUS SOLUTION OF DICYANDIAMIDE, FORMALDEHYDE, AND BORIC ACID CONDENSATION PRODUCT, THE PROPORTION OF FORMALDEHYDE BEING 2-16 MOLS OF 1 MOL OF DICYANDIAMIDE, AND THEN WASHING THE TREATED MATERIAL WITH WATER, THE RESULT BEING MATERIAL RETAINING THE SAID CONDENSATION PRODUCT AND BEING SUBSTANTIVE TO ACIDIC DYES OF KIND THAT ARE NOT WATERFAST IN THE ABSENCE OF THE CONDENSATION PRODUCT.
References Cited (Backward Citations)
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US2103640A
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GB476043A
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US2224293A
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US2563897A
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US2567238A
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US2637622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |