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:
Jul. 09, 1991
Filed:
Jun. 02, 1989
Applicant:
Inventors:
Frank Zimmermann, Herten, DE;
Thomas Jostmann, Haltern, DE;
Hans-Peter Schueller, Marl, DE;
Klaus Engel, Recklinghausen, DE;
Assignee:
Huels Aktiengesellschaft, Marl, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
25218626 ; 562-3 ; 562-4 ; 562-6 ;
Abstract
Stabilized diperoxydicarboxylic acids are prepared in which diperoxydicarboxylic acids are mixed with sodium sulfate produced in the process to yield improved diperoxydicarboxylic acid granules having good chemical stability despite a high impurity content, safe handling, low bulk density and high abrasion resistance.