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. 05, 1988
Filed:
Aug. 05, 1986
Applicant:
Inventors:
Helmut Kunst, Rodenbach, DE;
Christian Scondo, Hanau, DE;
Assignee:
Degussa Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
148 15 ; 148 155 ; 148128 ; 423179 ; 423395 ; 252 71 ;
Abstract
Undesired nitrites are formed during the treatment of salt bath nitrided structural components of iron and steel in nitrate containing cooling baths, and they must be removed from the washing water. The build-up of nitrites can be avoided by oxidizing the nitrite in the salt bath into nitrate by passing air into the cooling bath during off-times.
Quick Actions:
Kunst, Helmut. (1988). Process for the removal of alkali metal nitrite from nitrate containing (U.S. Patent No. 4717429). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4717429
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile