Patents by Inventor Katumi Ogi

Katumi Ogi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Composition and method for forming Ba.sub.1-X Sr.sub.x Ti.sub.y O.sub.3 thin films
    Patent number: 5645634
    Abstract: A composition comprising Ba and Sr salts of carboxylic acids represented by the formula: C.sub.n H.sub.2n+1 COOH wherein 3.ltoreq.n.ltoreq.7, and having structures represented by the following formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each represent a hydrogen atom, a methyl group or an ethyl group, and M represents Ba or Sr, can be used to form thin films of Ba.sub.1-x Sr.sub.x Ti.sub.y O.sub.3. A composition comprising a barium carboxylate, a strontium carboxylate and a titanium alkoxide in a mixed solvent of a carboxylic acid and an ester, can also be used to form Ba.sub.1-x Sr.sub.x Ti.sub.y O.sub.3 thin films. The proportion of the mixed solvent is 2-11 molar times as much as the Ti. A composition comprising salts of carboxylic acids represented by R.sup.a COOH wherein R.sup.a is a linear or branched alkyl group having 3-7 carbon atoms, as the Ba and Sr sources, and Ti(OR.sup.b).sub.4 wherein R.sup.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: July 8, 1997
    Assignee: Mitsubishi Materials Corporation
    Inventors: Katumi Ogi, Tadashi Yonezawa, Tsutomu Atsuki, Keiko Endo