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. 26, 2013
Filed:
Feb. 12, 2009
Tomonari Tanaka, Chigasaki, JP;
Mitsuru Yahagi, Chigasaki, JP;
Kouji Shibayama, Chigasaki, JP;
Takashi Nakamura, Chigasaki, JP;
Yuuji Fukaura, Ningbo, CN;
Tomonari Tanaka, Chigasaki, JP;
Mitsuru Yahagi, Chigasaki, JP;
Kouji Shibayama, Chigasaki, JP;
Takashi Nakamura, Chigasaki, JP;
Yuuji Fukaura, Ningbo, CN;
Ulvac, Inc., Chigasaki-Shi, JP;
Abstract
A method is provided which manufactures a vane used for an oil-sealed rotary vacuum pump and having at least a part formed of a resin material, the method including: an oil impregnating process of immersing the vane into oil used for the oil-sealed rotary vacuum pump under a depressurized condition, the oil impregnating process being carried out before a finishing process of finishing the vane into a final shape.