US3380799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anionic agent aftertreatment of cyanamide-modified cellulose
Assignee: Hubinger Co
•
Filing: 1965-02-26
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Granted: 1968-04-30
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Expires: 1985-02-26
Abstract
No abstract record available.
Inventors
- 👤 Lee H Elizer
- 👤 Glen C Glasscock
- 👤 John M Seitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:02
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/432; C; C08; C08B; C08B13/00; C08B13/02; C08B15/00; C08B15/05; C08B15/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A PROCESS FOR ADHERING AN ANIONIC MATERIAL TO A CELLULOSIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CELLULOSE, FATTY ACID ESTERS OF CELLULOSE AND CELLULOSE XANTHATE WHICH CONSISTS ESSENTIALLY OF TREATING SAID CELLULOSIC MATERIAL WITH AN AQUEOUS ALKALINE SOLUTION OF A SUBSTANCE FROM THE GROUP CONSISTING OF CYANAMIDE, ALKALI METAL AND ALKALINE EARTH METAL SALTS OF CYANAMIDE UNTIL A CATIONIC NITROGENATED MATERIAL IS OBTAINED HAVING AN ADDED NITROGEN CONTENT OF AT LEAST 0.041% BY WEIGHT CALCULATED ON THE DRY WEIGHT OF THE CELLULOSIC MATERIAL, AND THEN BRINGING SAID CATIONIC NITROGENATED MATERIAL INTO CONTACT WITH AN ANIONIC MATERIAL TO BE ADHERED THERETO FROM THE GROUP CONSISTING OF ANIONIC RESINS AND STARCHES.
Claim 2
Dependent Claim
110 words
A PROCESS FOR ADHERING AN ANIONIC MATERIAL TO A CELLULOSIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CELLULOSE, FATTY ACID ESTERS OF CELLULOSE AND CELLULOSE XANTHATE WHICH CONSISTS ESSENTIALLY OF TREATING SAID CELLULOSIC MATERIAL WITH AN AQUEOUS ALKALINE SOLUTION OF A SUBSTANCE FROM THE GROUP CONSISTING OF CYANAMIDE, ALKALI METAL AND ALKALINE EARTH METAL SALTS OF CYANAMIDE UNTIL A CATIONIC NITROGENATED MATERIAL IS OBTAINED HAVING AN ADDED NITROGEN CONTENT OF AT LEAST 0.041% BY WEIGHT CALCULATED ON THE DRY WEIGHT OF THE CELLULOSIC MATERIAL, AND THEN BRINGING SAID CATIONIC NITROGENATED MATERIAL INTO CONTACT WITH AN ANIONIC MATERIAL TO BE ADHERED THERETO FROM THE GROUP CONSISTING OF ANIONIC RESINS AND STARCHES.
References Cited (Backward Citations)
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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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |