Patents by Inventor Kazumi Saeki

Kazumi Saeki 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).

  • Bis(cyclohexylphenol) compounds and their use
    Patent number: 5105016
    Abstract: Bis(cyclohexylphenol) compounds of the formula ##STR1## wherein R is an alkyl having 1 to 6 carbon atoms, Y is --S--, --SO-- or --SO.sub.2 -- with the proviso that when R is methyl in the ortho position to the hydroxy, Y is --SO-- or --SO.sub.2 --and their use. The above-mentioned compounds are useful as antioxidants and biocides for industrial use.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: April 14, 1992
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Kazumi Saeki, Akira Shimada
  • Thermosensitive recording sheet
    Patent number: 5096873
    Abstract: A thermosensitive recording sheet comprising a support and a thermosensitive color developer layer thereon containing a basic leuco dye and an organic color developer, said layer containing a bis-phenyl sulfone compound selected from bis-(3-phenyl-4-hydroxyphenyl)sulfone and bis-(2-methyl-4-hydroxy-5-cyclohexylphenyl)sulfone as the organic color developer.
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: March 17, 1992
    Assignees: Jujo Paper Co., Ltd., Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Toshiaki Minami, Tadakazu Fukuchi, Toshio Kaneko, Fumio Fujimura, Kazuto Tsukinuki, Kazumi Saeki, Akira Shimada
  • P-oxybenzoic acid compounds
    Patent number: 4965395
    Abstract: p-Oxybenzoic acid compounds of the general formula: ##STR1## wherein R is alkyl having not less than two carbon atoms or aralkyl and Y is sulfur atom or sulfonyl.The compounds exhibit bactericidal activity and are useful as bactericides.
    Type: Grant
    Filed: March 16, 1989
    Date of Patent: October 23, 1990
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Kazumi Saeki, Takeshi Inoue, Shoichi Horie
  • Process for the production of penicillanic acid compounds
    Patent number: 4942229
    Abstract: An improved process for the production of penicillic acid compounds, especially chloromethyl ester of penicillin G, penicillin V or sulbactam is disclosed.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: July 17, 1990
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Kazumi Saeki, Masami Hirano, Kunihide Oka, Kazuto Tsukinuki, Setsuo Oikawa
  • Phthalate compounds
    Patent number: 4695649
    Abstract: A phthalate compound represented by the formula: ##STR1## wherein R is alkyl having 1-8 carbon atoms or benzyl. The compounds have a repellency action to unhygienic pests and a plasticization action to thermoplastic polymers, and are useful as a pesticide or plasticizer.
    Type: Grant
    Filed: June 12, 1985
    Date of Patent: September 22, 1987
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Masato Magami, Kazumi Saeki, Takanori Miura, Takeshi Inoue
  • Imidazo[2',1':2,3]-thiazolo[5,4-c]pyridines and composition thereof for treating immune diseases
    Patent number: 4244952
    Abstract: A heterocyclic compound of the formula: ##STR1## or a pharmaceutically acceptable acid addition salt thereof, wherein R.sup.1 is hydrogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxycarbonyl, formyl, nitroso, acyl, phenacyl, aralkyl, .alpha.-(benzyloxycarbonyl)benzyl or .alpha.-carboxybenzyl; each of R.sup.2 and R.sup.3 is hydrogen, C.sub.1-4 alkyl or aryl; and all of R.sup.4, R.sup.5 and R.sup.6 are hydrogens, or both R.sup.1 and R.sup.6, and R.sup.4 and R.sup.5 together form single bonds; in which definitions the term "acyl", "phenacyl", "aralkyl" or "aryl" means that it may be substituted by at least one substituent at any position(s) on the aromatic nucleus, each substituent being independently selected from C.sub.1-4 alkyl, C.sub.1-4 alkoxy, halogen, hydroxyl, phenyl, nitro, trifluoromethyl, methylthio, methanesulfonyl and methylenedioxy. Such compounds are useful as drugs for treating immune diseases.
    Type: Grant
    Filed: September 28, 1979
    Date of Patent: January 13, 1981
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Tomohiko Munakata, Kazumi Saeki, Kazuhiro Goto, Kiyoteru Ikegami