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. 10, 2005
Filed:
Jul. 18, 2002
Akio Okamiya, Nagano-ken, JP;
Masato Nasu, Nagano-ken, JP;
Akio Okamiya, Nagano-ken, JP;
Masato Nasu, Nagano-ken, JP;
Minebea Co., Ltd., Nagano-ken, JP;
Abstract
In order to remove or decrease fine granular sulfides of Mn, Cr, Mo, etc. (Mn—S, Cr—S, Mo—S, etc.) left on a machined workpiece surface of sulfur free-cutting alloy steel without affecting the form and dimensional accuracy thereof, there is provided a method for treating the sulfur free-cutting alloy steel which comprises a soaking process of the machined workpiece in a solvent and an ultrasonic cleaning process by applying ultrasonic waves of 1.0 to 2.0 W/cmin watt density at a frequency of 40 KHz or a multi frequency in the solvent.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile