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:
Feb. 28, 2006
Filed:
Jun. 17, 2004
Hiromi Nishiwaki, Niigata-ken, JP;
Takanobu Tsudera, Niigata-ken, JP;
Takayuki Honma, Niigata-ken, JP;
Shuji Tanaka, Niigata-ken, JP;
Hiromi Nishiwaki, Niigata-ken, JP;
Takanobu Tsudera, Niigata-ken, JP;
Takayuki Honma, Niigata-ken, JP;
Shuji Tanaka, Niigata-ken, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
A contaminated Group III metal hydrocarbon is purified by providing an adduct of Group III metal hydrocarbon with a Lewis base in a solvent having a boiling point which is up to 200° C., but at least 30° C. higher than the boiling point of the Group III metal hydrocarbon, separating the solvent from the adduct, and heating the adduct for thermal dissociation, thereby releasing the Group III metal hydrocarbon in high purity form.