US2971815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemically modified textiles
Assignee: Individual
•
Filing: 1957-10-31
•
Granted: 1961-02-14
•
Expires: 1977-10-31
Abstract
No abstract record available.
Inventors
- 👤 Austin L Bullock
- 👤 John D Guthrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:24
CPC Classifications
D; D06; D06M; D06M23/00; D06M13/00; D06M13/10; D06M13/152; D06M13/156; D06M13/184; D06M13/207; D06M13/21; D06M13/244; D06M13/248; D06M13/256; D06M13/262; D06M13/282; D06M13/322; Y; Y10; Y10S; Y10S8/00; Y10S8/02; Y10S8/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A PROCESS FOR CHEMICALLY MODIFYING FIBROUS CELLULOSIC MATERIALS WHILE PRESERVING THEIR FIBROUS FORM WHICH COMPRISES REACTING A FIBROUS CELLULOSIC MATERIAL CONTAINING FREE HYDROXYL GROUPS WITH A CROSS LINKING AGENT WHICH IS MEMBER OF THE GROUP CONSISTING OF POLYFUNCTIONAL CELLULOSE ETHERIFYING AND ESTERIFYING AGENTS AND WITH A MEMBER OF THE GROUP CONSISTING OF MONOFUNTIONAL CELLULOSE ETHERIFYING AND ESTERIFYING AGENTS.
Claim 2
Dependent Claim
58 words
A PROCESS FOR CHEMICALLY MODIFYING FIBROUS CELLULOSIC MATERIALS WHILE PRESERVING THEIR FIBROUS FORM WHICH COMPRISES REACTING A FIBROUS CELLULOSIC MATERIAL CONTAINING FREE HYDROXYL GROUPS WITH A CROSS LINKING AGENT WHICH IS MEMBER OF THE GROUP CONSISTING OF POLYFUNCTIONAL CELLULOSE ETHERIFYING AND ESTERIFYING AGENTS AND WITH A MEMBER OF THE GROUP CONSISTING OF MONOFUNTIONAL CELLULOSE ETHERIFYING AND ESTERIFYING AGENTS.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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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) | 1964-02-14 | 1964-08-15 | 1965-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-14 | 1968-08-15 | 1969-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-14 | 1972-08-15 | 1973-02-14 | $7700.00 | Window Closed / Lapsed |