US2985501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing flat drying, wet crease resistant cellulosic fabrics by reaction with cross-linking agents and products produced thereby
Assignee: Deering Milliken Research Corp
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Filing: 1956-04-03
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Granted: 1961-05-23
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Expires: 1976-04-03
Abstract
No abstract record available.
Inventors
- 👤 Dmitry M Gagarine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:58
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/272; D06M13/278; D06M13/10; D06M13/11; D06M13/144; Y; Y10; Y10S; Y10S8/00; Y10S8/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A PROCESS FOR IMPARTING FLAT DRYING PROPERTIES TO A CELLULOSIC FABRIC WHOSE CELLULOSIC FIBERS HAVE AN AVERAGE OF AT LEAST ABOUT 1.8 FREE HYDROXY GROUPS PER GLUCOSE UNIT WHICH PROCESS COMPRISES APPLYING TO SAID FABRIC A TOTAL AMOUNT OF WATER EQUAL TO AT LEAST 15% BUT LESS THAN 130% BY WEIGHT OF THE DRY WEIGHT OF THE FABRIC, A STRONG BASE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDES, ALKALI METAL SALTS WHICH FORM ALKALI METAL HYDROXIDES IN AQUEOUS SOLUTION, AND QUATERNARY AMMONIUM HYDROXIDES, THE AMOUNT OF SAID BASE, ON A DRY WEIGHT BASIS AND CALCULATED AS NAOH, CONSTITUTING NOT LESS THAN ABOUT 2% BY WEIGHT AND NOT MORE THAN ABOUT 15% BY WEIGHT OF THE TOTAL WATER PRESENT, AND AT LEAST ABOUT 5% BUT NOT MORE THAN ABOUT 30% BY WEIGHT OF THE CELLULOSIC FIBERS OF A CELLULOSE CROSS LINKING AGENT SELECTED FROM THE GROUP CONSISTING OF THOSE CAPABLE OF BEING REPRESENTED BY ONE OF THE FORMULAE:
Claim 2
Dependent Claim
159 words
A PROCESS FOR IMPARTING FLAT DRYING PROPERTIES TO A CELLULOSIC FABRIC WHOSE CELLULOSIC FIBERS HAVE AN AVERAGE OF AT LEAST ABOUT 1.8 FREE HYDROXY GROUPS PER GLUCOSE UNIT WHICH PROCESS COMPRISES APPLYING TO SAID FABRIC A TOTAL AMOUNT OF WATER EQUAL TO AT LEAST 15% BUT LESS THAN 130% BY WEIGHT OF THE DRY WEIGHT OF THE FABRIC, A STRONG BASE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDES, ALKALI METAL SALTS WHICH FORM ALKALI METAL HYDROXIDES IN AQUEOUS SOLUTION, AND QUATERNARY AMMONIUM HYDROXIDES, THE AMOUNT OF SAID BASE, ON A DRY WEIGHT BASIS AND CALCULATED AS NAOH, CONSTITUTING NOT LESS THAN ABOUT 2% BY WEIGHT AND NOT MORE THAN ABOUT 15% BY WEIGHT OF THE TOTAL WATER PRESENT, AND AT LEAST ABOUT 5% BUT NOT MORE THAN ABOUT 30% BY WEIGHT OF THE CELLULOSIC FIBERS OF A CELLULOSE CROSS LINKING AGENT SELECTED FROM THE GROUP CONSISTING OF THOSE CAPABLE OF BEING REPRESENTED BY ONE OF THE FORMULAE:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |