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. 21, 1986
Filed:
Aug. 16, 1984
Shigeki Matsuda, Okazaki, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
The present invention proposes a method for forming a chemical conversion phosphate film on the surface of steel, characterized in that the temperature of the conversion bath is from 0.degree. C. to 40.degree. C., the hydrogen-ion concentration (pH) of the conversion bath is in the range of from pH 2.2 to pH 3.5, and the oxidation reduction potential of the conversion bath is from 0 mV to 700 mV (normal hydrogen electrode potential). According to the present invention, normal-temperature phosphating and automatic bath control are attained.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile