US2969302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making paper
Assignee: ChampionX LLC
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Filing: 1957-02-14
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Granted: 1961-01-24
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Expires: 1977-02-14
Abstract
No abstract record available.
Inventors
- 👤 Green Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:53
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/54; C; C08; C08G; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213; C08G73/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PROCESS FOR IMPROVING FILLER AND FIBER FINES RETENTION IN THE MANUFACTURE OF CELLULOSIC PAPER WHICH COMPRISES ADDING TO PAPER STOCK CONTAINING AN INORGANIC FILLER FROM 0.05 TO ONE POUND PER TON OF PRODUCED PAPER OF A HYDROPHILIC ALKYLENE POLYAMINE-POLYFUNCTIONAL HALOHYDRIN POLYMER; AND THEREAFTER FORMING A PAPER SHEET FROM SAID STOCK, SAID STOCK BEING SUBSTANTIALLY FREE FROM OTHER SYNTHETIC LINEAR POLYMERS.
Claim 2
Dependent Claim
61 words
A PROCESS FOR IMPROVING FILLER AND FIBER FINES RETENTION IN THE MANUFACTURE OF CELLULOSIC PAPER WHICH COMPRISES ADDING TO PAPER STOCK CONTAINING AN INORGANIC FILLER FROM 0.05 TO ONE POUND PER TON OF PRODUCED PAPER OF A HYDROPHILIC ALKYLENE POLYAMINE-POLYFUNCTIONAL HALOHYDRIN POLYMER; AND THEREAFTER FORMING A PAPER SHEET FROM SAID STOCK, SAID STOCK BEING SUBSTANTIALLY FREE FROM OTHER SYNTHETIC LINEAR POLYMERS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |