US2686132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved refined wood pulp and a method of improving it
Assignee: Rayonier Inc
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Filing: 1950-07-14
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Granted: 1954-08-10
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Expires: 1970-07-14
Abstract
No abstract record available.
Inventors
- 👤 Gray Kenneth Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:31
CPC Classifications
C; C08; C08B; C08B1/00; D; D01; D01F; D01F2/00; D01F2/06; D01F2/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A REFINED WOOD PULP CONTAINING NATURAL AND ADDED ETHER-EXTRACTABLE SAPONIFIABLE MATTER AND ETHER-EXTRACTABLE OIL-SOLUBLE UNSAPONIFIABLE MATTER TOTALING NOT SUBSTANTIALLY OVER 0.15% BASED ON THE BONE DRY WEIGHT OF THE WOOD PULP, THE ADDED ETHER-EXTRACTABLE OIL-SOLUBLE UNSAPONIFIABLE MATTER BEING AN ETHYLENE GLYCOL MONOETHER OF AN ALIPHATIC HYDROXYL-SUBSTITUTED HYDROCARBON HAVING FROM 8 TO 18 CARBON ATOMS, THE TOTAL AMOUNT OF ETHER-EXTRACTABLE OIL-SOLUBLE UNSAPONIFIABLE MATTER IN THE PULP NOT SUBSTANTIALLY EXCEEDING 0.07% BASED ON THE BONE DRY WEIGHT OF THE PULP, SAID PULP ALSO CONTAINING AT LEAST ONE ADDED COMPOUND FROM THE GROUP CONSISTING OF SOAP-FORMING FATTY ACIDS, SOAP-FORMING RESINS AND THE WATER-SOLUBLE SODIUM SALTS OF SAID ACID.
Claim 2
Dependent Claim
105 words
A REFINED WOOD PULP CONTAINING NATURAL AND ADDED ETHER-EXTRACTABLE SAPONIFIABLE MATTER AND ETHER-EXTRACTABLE OIL-SOLUBLE UNSAPONIFIABLE MATTER TOTALING NOT SUBSTANTIALLY OVER 0.15% BASED ON THE BONE DRY WEIGHT OF THE WOOD PULP, THE ADDED ETHER-EXTRACTABLE OIL-SOLUBLE UNSAPONIFIABLE MATTER BEING AN ETHYLENE GLYCOL MONOETHER OF AN ALIPHATIC HYDROXYL-SUBSTITUTED HYDROCARBON HAVING FROM 8 TO 18 CARBON ATOMS, THE TOTAL AMOUNT OF ETHER-EXTRACTABLE OIL-SOLUBLE UNSAPONIFIABLE MATTER IN THE PULP NOT SUBSTANTIALLY EXCEEDING 0.07% BASED ON THE BONE DRY WEIGHT OF THE PULP, SAID PULP ALSO CONTAINING AT LEAST ONE ADDED COMPOUND FROM THE GROUP CONSISTING OF SOAP-FORMING FATTY ACIDS, SOAP-FORMING RESINS AND THE WATER-SOLUBLE SODIUM SALTS OF SAID ACID.
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) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |