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:
Jun. 16, 1998
Filed:
Jul. 31, 1996
Katsumi Ogi, Omiya, JP;
Hiroto Uchida, Omiya, JP;
Atsushi Itsuki, Omiya, JP;
Kazuo Wakabayashi, Omiya, JP;
Mitsubishi Materials Corporation, Tokyo, JP;
Abstract
Two types of high-purity Ti complexes, �TiO(DPM: dipivaloylmethane).sub.2 !.sub.2 and cis-Ti(O-t-Bu).sub.2 (DPM).sub.2, and BST film-forming liquid compositions comprising solutions of either of the two types of high-purity Ti complexes and Ba(DPM).sub.2 and/or Sr(DPM).sub.2 in organic solvents can be used to form BST films. Crystals of the former complex are produced by adding purified water to a solution of TiCl.sub.2 (DPM).sub.2 in an organic solution, adding an alkali chemical to the solution to adjust the pH to 6.0-8.0 to thereby produce turbidity, and separating the organic layer which is then washed with water and heated to reflux. Crystals of the latter complex is produced by adding HDPM to a solution of Ti(O-t-Bu).sub.4 in an organic solvent, and heating the solution to reflux.