Patent US2175983A successfully refreshed from Google Patents.
Patent US3119730A successfully refreshed from Google Patents.
US3119730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-floating, high alpha dissolving pulp sheet
Assignee: Georgia Pacific Nonwovens LLC
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Filing: 1960-08-12
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Granted: 1964-01-28
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Expires: 1980-08-12
Abstract
No abstract record available.
Inventors
- 👤 Jesse C Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:55
CPC Classifications
C; C08; C08B; C08B1/00; C08B1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PREHYDROLYZED SULFATE CHEMICAL PINE PULP SHEET HAVING SUBSTANTIALLY FALT SURFACES FOR USE IN THE SHEET STEEPING PROCEDURE FOR THE PRODUCTION OF ALKALI CELLULOSE, SAID SHEET HAVING AN ALPHA CELLULOSE CONTENT IN EXCESS OF ABOUT 96% AND AN AVERAGE REAM WEIGHT OF FROM ABOUT 105 TO ABOUT 315 POUNDS ON THE BASIS OF THE BONE DRY WEIGHT OF 500 SHEETS MEASURING 19" X 24", SAID SHEET HAVING PARALLEL AND ADJACENT STRIPES OF LOWER AND HIGHER REAM WEIGHT RUNNING IN THE MACHINE DIRECTION SUCH THAT THE RATIO OF THE BASIS WEIGHT OF THE HIGHER REAM WEIGHT STRIPES TO THE BASIS WEIGHT OF THE LOWER REAM WEIGHT STRIPES IS AT LEAST ABOUT 1.1 IN A SHEET CONTAINING ABOUT 96% ALPHA CELLULOSE
Claim 2
Dependent Claim
119 words
A PREHYDROLYZED SULFATE CHEMICAL PINE PULP SHEET HAVING SUBSTANTIALLY FALT SURFACES FOR USE IN THE SHEET STEEPING PROCEDURE FOR THE PRODUCTION OF ALKALI CELLULOSE, SAID SHEET HAVING AN ALPHA CELLULOSE CONTENT IN EXCESS OF ABOUT 96% AND AN AVERAGE REAM WEIGHT OF FROM ABOUT 105 TO ABOUT 315 POUNDS ON THE BASIS OF THE BONE DRY WEIGHT OF 500 SHEETS MEASURING 19" X 24", SAID SHEET HAVING PARALLEL AND ADJACENT STRIPES OF LOWER AND HIGHER REAM WEIGHT RUNNING IN THE MACHINE DIRECTION SUCH THAT THE RATIO OF THE BASIS WEIGHT OF THE HIGHER REAM WEIGHT STRIPES TO THE BASIS WEIGHT OF THE LOWER REAM WEIGHT STRIPES IS AT LEAST ABOUT 1.1 IN A SHEET CONTAINING ABOUT 96% ALPHA CELLULOSE
References Cited (Backward Citations)
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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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |