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:
Mar. 02, 1976
Filed:
Nov. 02, 1971
Applicant:
Inventors:
Helmut Hustede, Ladenburg (Neckar), DT;
Hermann Rudy, deceased, LATE OF Heidelberg, DT;
by Liselotte Rudy, nee Ringelmann, heir, Heidelberg, DT;
by Hans Rudy, heir, Heidelberg, DT;
by Barbara Sallewsky, nee Rudy, heir, St. Hermas, CA;
Assignee:
Joh. A. Benckiser GmbH, Ludwigshafen (Rhine), DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12d / ;
U.S. Cl.
CPC ...
195 / ;
Abstract
The invention concerns a process for producing citric acid during which ferri- or ferrocyanide ions like potassium ferrocyanide are added at a particular time and in a preselected amount.