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US3697230A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for polymerizing liquids to polymers

Assignee: Asahi Kasei Corp
•
Filing: 1970-07-13
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Granted: 1972-10-10
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Expires: 1990-07-13
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Abstract

Abstract A POLYMERIZATION VESSEL COMPRISES A VERTICAL SERIES OF REACTION CHAMBERS EACH HAVING BOTTOM AND SIDE WALLS. AN INLET CONNECTED TO THE TOP CHAMBER SUPPLIES POLYMERIZABLE LIQUID AND AN OUTLET IS CONNECTED TO THE LOWEST CHAMBER TO DISCHARGE POLYMER PRODUCT. CONNECTING TUBES CONNECT A CHAMBER WITH THE CHAMBER IMMEDIATELY BELOW IT. EACH CONNECTING TUBE HAS ITS UPPER END ABOVE THE BOTTOM WALL OF A CHAMBER LOCATED THEREABOVE; AND HAS ITS LOWER END DIRECTED AT AN ANGLE TO THE SURFACE OF THE POLYMERIZABLE LIQUID AND LOCATED NEAR THE WALL OF THE REACTION VESSEL. A JET STREAM OF VAPOR FROM THE LOWER END OF THE TUBE FLOWS ALONG THE INSIDE SURFACE OF THE CHAMBER AND THEN STRIKES THE SURFACE OF THE LIQUID TO IMPART A ROTATING MOVEMENT TO THE LIQUID.

Inventors

  • 👤 Yoshihisa Fujimoto
  • 👤 Yoshio Kimura
  • 👤 Iwao Terasaki
  • 👤 Takanobu Kitago

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 04:03
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/24; B01J19/2405; C; C08; C08G; C08G63/00; C08G63/78; C08G63/785; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00076; B01J2219/00085; B01J2219/00162; Y; Y10; Y10S; Y10S159/00; Y10S159/10

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1975-10-10 1976-04-10 1976-10-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-10-10 1980-04-10 1980-10-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-10-10 1984-04-10 1984-10-10 $7700.00 Window Closed / Lapsed

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