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:
Oct. 16, 2007
Filed:
Apr. 06, 2001
Applicants:
Tetsuji Mitsumoto, Himeji, JP;
Takeshi Nishimura, Himeji, JP;
Sei Nakahara, Himeji, JP;
Hidefumi Haramaki, Himeji, JP;
Inventors:
Tetsuji Mitsumoto, Himeji, JP;
Takeshi Nishimura, Himeji, JP;
Sei Nakahara, Himeji, JP;
Hidefumi Haramaki, Himeji, JP;
Assignee:
Nippon Shokubai Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/32 (2006.01); C07C 51/42 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention resides in providing a method for the prevention of possible polymerization of the easily polymerizable substance during the purification thereof by a column provided with (a) at least one tray directly fixed to a support ring with a bolt and a nut and/or (b) at least one tray fixed to a support ring with a vertical clamp or a distillation column provided in the lower part thereof with a splash collision plate.