US3146157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper containing a polymer mixture of polysulfonium resin and polycarboxylate resin
Assignee: Dow Chemical Co
•
Filing: 1962-01-08
•
Granted: 1964-08-25
•
Expires: 1982-01-08
Abstract
No abstract record available.
Inventors
- 👤 Robert W Morgan
- 👤 Melvin J Hatch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:54
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/41; D21H17/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A CELLULOSE FIBER WEB HAVING INCORPORATED THEREIN FROM 0.05 TO 3 PERCENT BASED ON THE WEIGHT OF THE FIBERS OF A POLYMER MIXTURE COMPRISING: (A) A WATER-SOLUBLE POLYMERIC POLYSULFONIUM RESIN CHARACTERIZED AS A POLYALKANE HAVING CHEMICALLY INTEGRAL THEREWITH A PLURALITY OF AT LEAST ABOUT 2 PERCENT OF THE REOCCURRING MOIETIES OF SULFONIUM MOIETIES REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
57 words
A CELLULOSE FIBER WEB HAVING INCORPORATED THEREIN FROM 0.05 TO 3 PERCENT BASED ON THE WEIGHT OF THE FIBERS OF A POLYMER MIXTURE COMPRISING: (A) A WATER-SOLUBLE POLYMERIC POLYSULFONIUM RESIN CHARACTERIZED AS A POLYALKANE HAVING CHEMICALLY INTEGRAL THEREWITH A PLURALITY OF AT LEAST ABOUT 2 PERCENT OF THE REOCCURRING MOIETIES OF SULFONIUM MOIETIES REPRESENTED BY THE FORMULA:
References Cited (Backward Citations)
FR1031228A
Cited
US2768990A
Cited
US2895925A
Cited
US2923700A
Cited
US2989520A
Cited
US3060156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |