Patent US3795576A successfully refreshed from Google Patents.
US3795576A
Expired / Lapsed
US
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Cylindrical screen method for paper manufacturing
Assignee: Mitsuoki Iron Works Co Ltd
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Filing: 1971-12-27
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Granted: 1974-03-05
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Expires: 1991-12-27
Abstract
Abstract A CYLINDRICAL SCREEN-TYPE MACHINE FOR PAPER MANUFACTURE IS OPERATED SUCH THAT WHITE WATER WHICH FILTERS TO THE INTERIOR OF A CYCLINDRICAL SCREEN DOES NOT SPLASH ONTO A PAPER LAYER FORMED ON THE OUTER SURFACE OF THE CYLINDRICAL SCREEN WHEN THE WHITE WATER IS LATER THROWN OFF BY CENTRIFUGAL FORCE. THE EFFECTIVENESS IN OPERATION OF THE PRESENT MACHINE IN PREVENTING THE PAPER PRODUCED FROM BEING SOILED BY SPLASHING WHITE WATER INCREASES WITH INCREASING SPEED OF ROTATION OF THE SCREEN CYLINDER.
Inventors
- 👤 K Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:06
CPC Classifications
D; D21; D21F; D21F9/00; D21F9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |