Patent US4689495A successfully refreshed from Google Patents.
Patent US2607678A successfully refreshed from Google Patents.
US2607678A
Expired / Lapsed
US
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Method of deinking waste paper
Assignee: Watervliet Paper Co
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Filing: 1947-08-05
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Granted: 1952-08-19
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Expires: 1967-08-05
Abstract
No abstract record available.
Inventors
- 👤 Louis J Scheid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:27
CPC Classifications
D; D21; D21C; D21C5/00; D21C5/02; D21C5/025; D21C5/027; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/64
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
67 words
IN THE PROCESS OF REMOVING OIL SOLUBLE SUBSTANCES FROM WASTE PAPER THE STEPS OF AGITATING A MIXTURE INCLUDING WASTE PAPER PULP, CARBON TETRACHLORIDE TO DISSOLVE THE OIL SOLUBLE SUBSTANCES FROM THE PAPER, AND SOY FLOUR AS AN EMULSIFYING AGENT TO EMULSIFY THE OILY MASS, CONTINUING THE AGITATION UNTIL THE OIL MASS IS EMULSIFIED, AND THEN WASHING THE MIXTURE TO REMOVE THE EMULSIFIED OILY MASS FROM THE PAPER.
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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) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |