Patent US3250665A successfully refreshed from Google Patents.
US3250665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of modifying a paper web with epoxy resins by addition of polyalkyl-acrylamide degradation product in formation of the paper
Assignee: Kimberly Clark Tissue Co
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Filing: 1963-08-19
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Granted: 1966-05-10
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Expires: 1983-08-19
Abstract
No abstract record available.
Inventors
- 👤 Jerome M Gess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:37
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/37; D21H17/375; D21H17/46; D21H17/52
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
48 words
A PROCESS FOR PRODUCING MODIFIED CELLULOSE COMPRISING THE STEPS OF: (A) ADDING A POLYMETHACRYLAMIDE DEGRADATION PRODUCT TO A PULP FURNISH; (B) FORMING A SHEET FROM THE PULP FURNISH; (C) ADDING AN EPOXY RESIN EMULSION TO THE FORMED WET SHEET WHEREIN THE EPOXY RESIN IS CHARACTERIZED BY THE FORMULA:
Claim 2
Dependent Claim
48 words
A PROCESS FOR PRODUCING MODIFIED CELLULOSE COMPRISING THE STEPS OF: (A) ADDING A POLYMETHACRYLAMIDE DEGRADATION PRODUCT TO A PULP FURNISH; (B) FORMING A SHEET FROM THE PULP FURNISH; (C) ADDING AN EPOXY RESIN EMULSION TO THE FORMED WET SHEET WHEREIN THE EPOXY RESIN IS CHARACTERIZED BY THE FORMULA:
Claim 3
Dependent Claim
29 words
A MODIFIED PAPER PRODUCT HAVING INCLUDED THEREIN IN A REACTED FORM WITH CELLULOSIC FIBERS A REACTION PRODUCT OF A POLYALKYLACRYLAMIDE DEGRADATION PRODUCT AND AN EPOXY COMPOUND OF THE FORMULA:
Claim 4
Dependent Claim
29 words
A MODIFIED PAPER PRODUCT HAVING INCLUDED THEREIN IN A REACTED FORM WITH CELLULOSIC FIBERS A REACTION PRODUCT OF A POLYALKYLACRYLAMIDE DEGRADATION PRODUCT AND AN EPOXY COMPOUND OF THE FORMULA:
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |