Patent US3199575A successfully refreshed from Google Patents.
US3199575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscillatory rotor blade for treatment of fluent material in thin layers
Assignee: Luwa Ltd
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Filing: 1962-10-31
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Granted: 1965-08-10
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Expires: 1982-10-31
Abstract
No abstract record available.
Inventors
- 👤 Keller Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:24
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/22; B01D1/222; B01D1/223; B01D1/225; F; F28; F28F; F28F19/00; F28F19/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
AN OSCILLATORY ROTOR BLADE FOR FLUENT MATERIAL PROCESSING APPARATUS FOR THE TYPE IN WHICH FLUENT MATERIAL IS SPREAD IN THIN LAYER FORM OVER THE INNER SURFACE OF A TUBULAR PROCESS CHAMBER BY A ROTOR STRUCTURE MOUNTED AXIALLY WITHIN SAID CHAMBER, SAID BLADE FORMING AN ACTIVE LAYER SPREADING ELEMENT OF SAID ROTOR STRUCTURE AND SAID BLADE BEING CHARACTERIZED, IN COMBINATION WITH SAID PROCESS CHAMBER AND ROTOR STRUCTURE, BY A HINGED MOUNTING ON SAID ROTOR STRUCTURE ABOUT A COPLANAR AXIS DISPLACED
Claim 2
Dependent Claim
79 words
AN OSCILLATORY ROTOR BLADE FOR FLUENT MATERIAL PROCESSING APPARATUS FOR THE TYPE IN WHICH FLUENT MATERIAL IS SPREAD IN THIN LAYER FORM OVER THE INNER SURFACE OF A TUBULAR PROCESS CHAMBER BY A ROTOR STRUCTURE MOUNTED AXIALLY WITHIN SAID CHAMBER, SAID BLADE FORMING AN ACTIVE LAYER SPREADING ELEMENT OF SAID ROTOR STRUCTURE AND SAID BLADE BEING CHARACTERIZED, IN COMBINATION WITH SAID PROCESS CHAMBER AND ROTOR STRUCTURE, BY A HINGED MOUNTING ON SAID ROTOR STRUCTURE ABOUT A COPLANAR AXIS DISPLACED
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |