US3554862A
Expired / Lapsed
US
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Method for producing a fiber pulp sheet by impregnation with a long chain cationic debonding agent
Assignee: Georgia-Pacific LLC
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Filing: 1968-06-25
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Granted: 1971-01-12
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Expires: 1988-06-25
Abstract
Abstract IN A METHOD OF PRODUCING FROM CELLULOSE FIBER PULP, A PULP SHEET, THE IMPROVEMENT OF IMPREGNATING THE PULP WITH ABOUT 0.1% TO 5.0% BASED ON THE WEIGHT OF THE DRY PULP, OF A CATIONIC LONG CHAIN FATTY ALKYL COMPOUND DEBONDING AGENT HAVING AT LEAST 12 CARBON ATOMS IN AT LEAST ONE ALKYL CHAIN SUCH AS DIHYDROGENATED DIMETHYL AMMONIUM CHLORIDE DERIVED FROM A TALLOW OIL, AND FORMING A SHEET FROM THE IMPREGNATED PULP THAT CAN BE EASILY MECHANICALLY FIBERIZED.
Inventors
- 👤 Laurence R B Hervey
- 👤 Donald K George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:01
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/47; D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/425; D21; D21C; D21C9/00; D21C9/001; D21C9/002; D21C9/005; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/07; A61F13/53; A61F13/534; A61F13/53409; A61F2013/530131
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |