US2546749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of pulp
Assignee: Rayonier Inc
•
Filing: 1946-05-01
•
Granted: 1951-03-27
•
Expires: 1966-05-01
Abstract
No abstract record available.
Inventors
- 👤 Judson H Holloway
- 👤 Robert S Tabke
- 👤 Arthur N Parrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:34
CPC Classifications
C; C08; C08B; C08B1/00; C08B1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
IN THE TREATMENT OF HIGH-ALPHA MERCERIZED WOOD PULP TO RENDER IT ACTIVE TOWARD ACETYLATION RESULTING IN A LOWER PERCENTAGE OF UNREACTED FIBERS, THE IMPROVEMENT WHICH COMPRISES GRINDING THE MERCERIZED WOOD PULP DRIED TO A MOISTURE CONTENT OF NOT OVER 6% IN CONTACT WITH THE ACETIC ACID.
Claim 2
Dependent Claim
46 words
IN THE TREATMENT OF HIGH-ALPHA MERCERIZED WOOD PULP TO RENDER IT ACTIVE TOWARD ACETYLATION RESULTING IN A LOWER PERCENTAGE OF UNREACTED FIBERS, THE IMPROVEMENT WHICH COMPRISES GRINDING THE MERCERIZED WOOD PULP DRIED TO A MOISTURE CONTENT OF NOT OVER 6% IN CONTACT WITH THE ACETIC ACID.
References Cited (Backward Citations)
US1851008A
Cited
US2112999A
Cited
US2096977A
Cited
US2164416A
Cited
US2380706A
Cited
US2415949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |