US3248279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulosic products treated with soluble cationic (methylenediphenyl ether) polymers
Assignee: Dow Chemical Co
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Filing: 1963-09-30
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Granted: 1966-04-26
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Gerald R Geyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:03
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; G03G5/105; G03G5/108; C; C08; C08G; C08G61/00; C08G61/12; C08G61/121; D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/53; G03G5/101; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S525/00; Y10S525/905; Y10S525/919
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
55 words
A CELLULOSIC PRODUCT COMPRISING CELLULOSE FIBERS HAVING INCORPORATED THEREIN AT LEAST 0.05 WEIGHT PERCENT ON A DRY PULP BASIS OF A SOLUBLE CATIONIC (METHYLENEDIPHENYL ETHER) POLYMER HAVING AN AVERAGE OF AT LEAST 0.05 CATIONIC GROUPS PER DIPHENYL ETHER MOIETY, SAID CATIONIC GROUPS BEING BONDED TO THE AROMATIC NUCLEI OF THE POLYMER BY A METHYLENE GROUP.
Claim 2
Dependent Claim
55 words
A CELLULOSIC PRODUCT COMPRISING CELLULOSE FIBERS HAVING INCORPORATED THEREIN AT LEAST 0.05 WEIGHT PERCENT ON A DRY PULP BASIS OF A SOLUBLE CATIONIC (METHYLENEDIPHENYL ETHER) POLYMER HAVING AN AVERAGE OF AT LEAST 0.05 CATIONIC GROUPS PER DIPHENYL ETHER MOIETY, SAID CATIONIC GROUPS BEING BONDED TO THE AROMATIC NUCLEI OF THE POLYMER BY A METHYLENE GROUP.
Claim 3
Independent Claim
67 words
A METHOD FOR THE MANUFACTURE OF ELECTROCONDUCTIVE PAPER WHICH COMPRISES APPLYING AN AQUEOUS SOLUTION OF A WATER-SOLUBLE CATIONIC (METHYLENEDIPHENYL ETHER) POLYMER, SAID POLYMER HAVING AN AVERAGE OF AT LEAST 0.3 QUATERNARY AMMONIUM GROUP PER DIPHENYL ETHER MOIETY, TO A PAPER STOCK SO THAT THERE IS INCORPORATED THEREIN FROM ABOUT 0.05 TO 10.0 WEIGHT PERCENT ON A DRY PULP BASIS OF SAID POLYMER, AND THEREAFTER DRYING THE PAPER.
Claim 4
Independent Claim
67 words
A METHOD FOR THE MANUFACTURE OF ELECTROCONDUCTIVE PAPER WHICH COMPRISES APPLYING AN AQUEOUS SOLUTION OF A WATER-SOLUBLE CATIONIC (METHYLENEDIPHENYL ETHER) POLYMER, SAID POLYMER HAVING AN AVERAGE OF AT LEAST 0.3 QUATERNARY AMMONIUM GROUP PER DIPHENYL ETHER MOIETY, TO A PAPER STOCK SO THAT THERE IS INCORPORATED THEREIN FROM ABOUT 0.05 TO 10.0 WEIGHT PERCENT ON A DRY PULP BASIS OF SAID POLYMER, AND THEREAFTER DRYING THE PAPER.
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |