Patent US2999045A successfully refreshed from Google Patents.
US2999045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deresination of wood pulp
Assignee: Rayonier Inc
•
Filing: 1953-07-22
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Granted: 1961-09-05
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Expires: 1973-07-22
Abstract
No abstract record available.
Inventors
- 👤 Mitchell Reid Logan
- 👤 Else S Schlosser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:42
CPC Classifications
D; D21; D21C; D21C9/00; D21C9/08; D21C9/086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
THE PROCESS OF PRODUCING IMPROVED HIGH-ALPHA CELLULOSE PULP WHICH COMPRISES WASHING A PREVIOUSLY DIGESTED WOOD PULP WITH COMPRISES WASHING A PREVIOUSLY DIGESTED THEREIN FROM 0.01 TO 0.3% BY WEIGHT BASED ON THE WEIGHT OF THE BONE DRY PULP OF A BLOCK COPOLYMER REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
46 words
THE PROCESS OF PRODUCING IMPROVED HIGH-ALPHA CELLULOSE PULP WHICH COMPRISES WASHING A PREVIOUSLY DIGESTED WOOD PULP WITH COMPRISES WASHING A PREVIOUSLY DIGESTED THEREIN FROM 0.01 TO 0.3% BY WEIGHT BASED ON THE WEIGHT OF THE BONE DRY PULP OF A BLOCK COPOLYMER REPRESENTED BY THE FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |