US2518680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wood pulp
Assignee: Rayonier Inc
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Filing: 1945-06-22
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Granted: 1950-08-15
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Expires: 1965-06-22
Abstract
No abstract record available.
Inventors
- 👤 Gray Kenneth Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:52
CPC Classifications
C; C08; C08B; C08B1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN A METHOD OF PRODUCING AN IMPROVED WOOD PULP FROM A REFINED WOOD PULP CONTAINING NOT OVER 0.15% OF NATURAL ETHER EXTRACTABLE MATTER CONSISTING OF SAPONIFIABLE MATTER AND NOT OVER 0.07% OF OIL SOLUBLE UNSAPONIFIABLE MATTER, ASCERTAINING THE QUANTITIES OF SAPONIFIABLE AND UNSAPONIFIABLE MATTER IN THE PULP AND ADJUSTING THE PERCENTAGES THEREOF TO A PREDETERMINED NORM, NOT OVER 0.15% BY THE ADDITION TO THE PULP OF AT LEAST ONE OF THE SAID FORMS OF ETHER EXTRACTABLE MATTER, THE SAPONIFIABLE ADDTION BEING A COMPOUND OF THE GROUP CONSISTING OF FATTY ACID AND RESIN ACID WHICH WHEN SAPONIFIED IS A WATER SOLUBLE SOAP, AND THE UNSAPONIFIABLE ADDITION BEING AN OIL SOLUBLE ALCOHOL SELECTED FROM THE GROUP CONSISTING OF AN ALIPHATIC ALCOHOL CONTAINING AT LEAST 10 CARBON ATOMS AND A CYCLOALIPHATIC ALCOHOL CONTAINING AT LEAST 10 CARBON ATOMS WHEREBY PULP HAVING UNIFORM CHARACTERISTICS IS PRODUCED FROM DIFFERENT TYPES OF WOODS.
Claim 2
Dependent Claim
147 words
IN A METHOD OF PRODUCING AN IMPROVED WOOD PULP FROM A REFINED WOOD PULP CONTAINING NOT OVER 0.15% OF NATURAL ETHER EXTRACTABLE MATTER CONSISTING OF SAPONIFIABLE MATTER AND NOT OVER 0.07% OF OIL SOLUBLE UNSAPONIFIABLE MATTER, ASCERTAINING THE QUANTITIES OF SAPONIFIABLE AND UNSAPONIFIABLE MATTER IN THE PULP AND ADJUSTING THE PERCENTAGES THEREOF TO A PREDETERMINED NORM, NOT OVER 0.15% BY THE ADDITION TO THE PULP OF AT LEAST ONE OF THE SAID FORMS OF ETHER EXTRACTABLE MATTER, THE SAPONIFIABLE ADDTION BEING A COMPOUND OF THE GROUP CONSISTING OF FATTY ACID AND RESIN ACID WHICH WHEN SAPONIFIED IS A WATER SOLUBLE SOAP, AND THE UNSAPONIFIABLE ADDITION BEING AN OIL SOLUBLE ALCOHOL SELECTED FROM THE GROUP CONSISTING OF AN ALIPHATIC ALCOHOL CONTAINING AT LEAST 10 CARBON ATOMS AND A CYCLOALIPHATIC ALCOHOL CONTAINING AT LEAST 10 CARBON ATOMS WHEREBY PULP HAVING UNIFORM CHARACTERISTICS IS PRODUCED FROM DIFFERENT TYPES OF WOODS.
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) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |