US2683710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of alkali cellulose
Assignee: Rayonier Inc
•
Filing: 1950-04-04
•
Granted: 1954-07-13
•
Expires: 1970-04-04
Abstract
No abstract record available.
Inventors
- 👤 Briggs Ben Thoburn
- 👤 Schlosser Paul Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:25
CPC Classifications
C; C08; C08B; C08B1/00; C08B1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
THE IMPROVEMENT IN THE PREPARATION OF ALKALI CELLULOSE WHICH COMPRISES SUBJECTING A BOOK OF DISCONNECTED CELLULOSE PULP SHEETS, EACH OF WHICH HAS AT LEAST ONE SLIT, TO STEEPING IN A CAUSTIC STEEPING SOLUTION, WHEREBY ON SHRINKAGE OF THE SHEETS A PASSAGEWAY FORMS AT THE SLIT, RESULTING
Claim 2
Dependent Claim
46 words
THE IMPROVEMENT IN THE PREPARATION OF ALKALI CELLULOSE WHICH COMPRISES SUBJECTING A BOOK OF DISCONNECTED CELLULOSE PULP SHEETS, EACH OF WHICH HAS AT LEAST ONE SLIT, TO STEEPING IN A CAUSTIC STEEPING SOLUTION, WHEREBY ON SHRINKAGE OF THE SHEETS A PASSAGEWAY FORMS AT THE SLIT, RESULTING
References Cited (Backward Citations)
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US916036A
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US1263723A
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US1625472A
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US1826825A
Cited
US1927266A
Cited
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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) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |