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:
Sep. 24, 2002
Filed:
Oct. 11, 2000
Applicant:
Inventors:
Yuichi Ijiri, Himeji, JP;
Takeshi Nishimura, Himeji, JP;
Kazuhiko Sakamoto, Himeji, JP;
Hiroo Iwato, Himeji, JP;
Takashi Sera, Himeji, JP;
Assignee:
Nippon Shokubai Co., Ltd., Osaka-fu, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 1/00 ;
U.S. Cl.
CPC ...
F04B 1/00 ;
Abstract
A method for transferring an easily-polymerizable substance by using a vertically-arranged circulation type canned motor pump or a gas seal type motor pump. Transferring the easily-polymerizable substance such as (meth)acrylic acid with use of the motor pump having the vertically-arranged main shaft enables effective prevention of polymerized matter in the pump. The method assures stable transfer of easily-polymerizable matter for a prolonged time.