The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 08, 1980
Filed:
Dec. 20, 1977
Applicant:
Inventors:
Malcolm L Green, Oxford, GB;
Vivian J Hammond, London, GB;
Assignee:
G. V. Planer Limited, Sunbury on Thames, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
423659 ; 62 555 ; 118719 ; 118724 ; 2604 / ; 422 62 ; 422129 ; 422198 ; 422202 ; 422234 ; 423593 ; 427124 ; 427250 ;
Abstract
Apparatus for the chemical synthesis of an evaporant and a liquid has a cryogenic pumping device between the evaporant source and the reaction region and a pump causes the liquid to be continuously recirculated until the reaction is completed, the pressure in the evaporation region being maintained substantially lower than that in the reaction region by differential pumping.