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:
May. 17, 1977
Filed:
May. 21, 1974
Applicant:
Inventors:
Marinus Alfenaar, Schinnen, NL;
Desire J Jadoul, Valkenburg (L), NL;
Assignee:
Stamicarbon B.V., Geleen, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ; C25B / ; C01C / ;
U.S. Cl.
CPC ...
204 / ; 423371 ; 423379 ; 423383 ;
Abstract
Cyanogen halides, particularly cyanogen bromide and cyanogen chloride, are prepared in an electrolysis cell with cathode and anode chambers separated by a semi-permeable diaphragm, by reacting halide ions with hydrogen cyanide or a salt thereof in the anode chamber by means of a direct current, the pH value of the reactant in the anode chamber being lower than 4.