Patent US2623875A successfully refreshed from Google Patents.
US2623875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wood pulp and method of producing same
Assignee: Rayonier Inc
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Filing: 1950-09-09
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Granted: 1952-12-30
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Expires: 1970-09-09
Abstract
No abstract record available.
Inventors
- 👤 Schlosser Paul Henry
- 👤 Gray Kenneth Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:40
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
54 words
AS A NEW ARTICLE OF MANUFACTURE RELATIVELY FRY REFINED WOOD PULP IN SHEET FORM HAVING INCORPORATIED THEREIN FROM 0.02 TO 0.50 PERCENT BY WEIGHT BASED ON THE BONE DRY WEIGHT OF THE PULP OF A WATER-SOLUBLE MIXED ETHER CONTAINING A POLYETHYLENE OXIDE RADICAL AND AN ALIPHATIC HYDROCARBON RADICAL CONTAINING MORE THAN 7 CARBON ATOMS.
Claim 2
Dependent Claim
54 words
AS A NEW ARTICLE OF MANUFACTURE RELATIVELY FRY REFINED WOOD PULP IN SHEET FORM HAVING INCORPORATIED THEREIN FROM 0.02 TO 0.50 PERCENT BY WEIGHT BASED ON THE BONE DRY WEIGHT OF THE PULP OF A WATER-SOLUBLE MIXED ETHER CONTAINING A POLYETHYLENE OXIDE RADICAL AND AN ALIPHATIC HYDROCARBON RADICAL CONTAINING MORE THAN 7 CARBON ATOMS.
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) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |