Patent BE654959A successfully refreshed from Google Patents.
US3867104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerizer reactor
Assignee: Monsanto Co
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Filing: 1973-04-12
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Granted: 1975-02-18
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Expires: 1993-04-12
Abstract
Abstract A conveying apparatus for incorporation into a finisher comprising a portion of a cylindrical member being a helical segment and having a number of substantially parallel helical ridges on a least one surface thereof forming helical channels.
Inventors
- 👤 Iii Allen E Leybourne
- 👤 Terry H Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:22
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/20; B01F; B01F27/00; B01F27/05; B01F27/07; B01F27/074; B01F27/27; B01F27/272; B01F27/2722; B01F25/00; B01F2025/91; B01F2025/912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A POLYMERIZER REACTOR COMPRISING IN COMBINATION: (A) A SHAFT ROTATING ABOUT ITS AXIS, (B) AT LEAST ONE ROTOR MEMBER COMPRISING AT LEAST A SEGMENT EACH OF A PLURALITY OF PERFORATED HOLLOW CORE CYLINDERS BEING CONCENTRIC WITH AND SURROUNDING A PORTION OF SAID SHAFT, (C) MEANS FOR COAXIALLY SUPPORTING SAID PERFORATED CYLINDERS ON SAID SHAFT, (D) A CONVEYOR STATOR MEMBER COMPRISING AT LEAST A PORTION OF A CYLINDRICAL MEMBER HAVING HELICAL PROJECTIONS PROTRUDING RADIALLY AND EXTENDING GENERALLY DIAGONALLY ACROSS AT LEAST ONE SURFACE THEREOF, FORMING SEGMENTED HELICAL CHANNELS, SAID HELICAL CHANNELS BEING IN WORKING JUXTAPOSITION WITH AT LEAST ONE SURFACE OF AT LEAST ONE OF SAID PERFORATED HOLLOW CORE CYLINDERS, (E) A GENERALLY CYLINDRICAL VESSEL INCLUDING THE WALL SURROUNDING THE OUTERMOST OF SAID ROTOR AND STATOR MEMBERS, (F) MEANS FOR INTRODUCING POLYMERIZABLE MATERIAL INTO SAID VESSEL, AND (G) MEANS FOR RECOVERING POLYMERIZED MATERIAL FROM SAID VESSEL.
Claim 2
Dependent Claim
145 words
A POLYMERIZER REACTOR COMPRISING IN COMBINATION: (A) A SHAFT ROTATING ABOUT ITS AXIS, (B) AT LEAST ONE ROTOR MEMBER COMPRISING AT LEAST A SEGMENT EACH OF A PLURALITY OF PERFORATED HOLLOW CORE CYLINDERS BEING CONCENTRIC WITH AND SURROUNDING A PORTION OF SAID SHAFT, (C) MEANS FOR COAXIALLY SUPPORTING SAID PERFORATED CYLINDERS ON SAID SHAFT, (D) A CONVEYOR STATOR MEMBER COMPRISING AT LEAST A PORTION OF A CYLINDRICAL MEMBER HAVING HELICAL PROJECTIONS PROTRUDING RADIALLY AND EXTENDING GENERALLY DIAGONALLY ACROSS AT LEAST ONE SURFACE THEREOF, FORMING SEGMENTED HELICAL CHANNELS, SAID HELICAL CHANNELS BEING IN WORKING JUXTAPOSITION WITH AT LEAST ONE SURFACE OF AT LEAST ONE OF SAID PERFORATED HOLLOW CORE CYLINDERS, (E) A GENERALLY CYLINDRICAL VESSEL INCLUDING THE WALL SURROUNDING THE OUTERMOST OF SAID ROTOR AND STATOR MEMBERS, (F) MEANS FOR INTRODUCING POLYMERIZABLE MATERIAL INTO SAID VESSEL, AND (G) MEANS FOR RECOVERING POLYMERIZED MATERIAL FROM SAID VESSEL.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |