US2542285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulose products
Assignee: Rayonier Inc
•
Filing: 1946-07-23
•
Granted: 1951-02-20
•
Expires: 1966-07-23
Abstract
No abstract record available.
Inventors
- 👤 Mitchell Reid Logan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:31
CPC Classifications
C; C08; C08B; C08B1/00; C08B1/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
47 words
IN THE PRODUCTION OF VISCOSE HAVING GOOD FILTERABILITY, THE IMPROVEMENT WHICH COMPRISES FORMING THE VISCOSE FROM CELLULOSE HAVING LOW AGING REQUIREMENTS AND CONTAINING FROM 1 TO 100 PARTS PER MILLION OF MANGANESE ADDED AS A WATER SOLUBLE COMPOUND BASED ON THE BONE DRY WEIGHT OF THE CELLULOSE.
References Cited (Backward Citations)
US1860431A
Cited
US1923641A
Cited
US1935129A
Cited
US2028846A
Cited
US2247209A
Cited
US2368527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |