Patents by Inventor Tadashi Ashizawa

Tadashi Ashizawa 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).

  • Publication number: 20190389780
    Abstract: Sanitary ware, including a ceramic base material, an upper glaze layer positioned on a surface of the ceramic base material, and an intermediate layer positioned between the ceramic base material and the upper glaze layer, wherein the sanitary ware satisfies at least one of the following conditions: a pore area ratio of 3% or less in terms of a ratio of an area of pores present in a cut surface obtained by cutting the upper glaze layer along the thickness direction thereof, relative to an area of the cut surface, an average pore size of 50 ?m or less as measured with respect to the cut surface obtained by cutting the upper glaze layer along the thickness direction thereof, and a difference of 50 ?m or less between the maximum and minimum values of the thickness of the upper glaze layer.
    Type: Application
    Filed: June 17, 2019
    Publication date: December 26, 2019
    Applicant: LIXIL Corporation
    Inventors: Toshinori MORI, Kazuo TAKEUCHI, Shunzou IWASAKI, Isao YOSHINAGA, Hiroyuki MIYAMOTO, Tadashi ASHIZAWA, Hideaki SAWADA, Jaehoon CHOI, Shuji KAWAI
  • Publication number: 20190390449
    Abstract: The washbowl includes a bowl recessed downward, and comprising a ceramics base material, an intermediate layer disposed on a surface side of the ceramics base, and an upper glaze layer disposed on a surface side of the intermediate layer, the upper glaze layer being more transparent than the intermediate layer; and a drainage port. The bowl includes an inclined surface formed on a surface of the bowl and continuously recessed downward, the inclined surface formed at a position at least on a front side of the surface of the bowl when a user uses the bowl, the position being configured to be seen by the user, and the inclined surface is formed such that a tangent to the inclined surface is formed at 5 degrees to 75 degrees with respect to a horizontal plane.
    Type: Application
    Filed: June 17, 2019
    Publication date: December 26, 2019
    Applicant: LIXIL Corporation
    Inventors: Hiroshi KOBAYASHI, Toshinori MORI, Kazuo TAKEUCHI, Shunzou IWASAKI, Isao YOSHINAGA, Hiroyuki MIYAMOTO, Tadashi ASHIZAWA, Hideaki SAWADA, Jaehoon CHOI, Shuji KAWAI
  • Patent number: 8796320
    Abstract: Provided is a 1,3,4-oxadiazole-2-carboxamide compound which has STAT3 inhibitory activity and is useful as an anticancer agent. Provided is a 1,3,4-oxadiazole-2-carboxamide compound represented by formula (I) or a pharmacologically acceptable salt thereof (in the formula, Ar represents a furyl group or the like; R1 represents a hydrogen atom or the like; and —X—Y represents a diaryl group such as a biphenyl group).
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: August 5, 2014
    Assignees: General Incorporated Association Pharma Valley Project Supporting Organization, Pharma Design, Shizuoka Prefecture, Kumamoto Health Science University, Kabushiki Kaisha Yakult Honsha
    Inventors: Akira Asai, Kenji Matsuno, Naohisa Ogo, Osamu Takahashi, Yoshiaki Masuda, Ayumu Muroya, Yasuto Akiyama, Tadashi Ashizawa, Tadashi Okawara
  • Patent number: 8466290
    Abstract: The present invention provides a STATS inhibitor containing as an active ingredient, a quinolinecarboxamide derivative represented by the formula (I) (in the formula, W represents a bond or an alkylene chain; X represents O, S, or NR34; and R1 to R8 and R34 each represent H, halogen, alkyl, phenyl, furyl, thienyl, or the like), or a pharmacologically acceptable salt thereof.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: June 18, 2013
    Assignees: Pharma IP General Incorporated Association, Pharma Design, Inc., Shizuoka Prefecture, Kumamoto Health Science University, Kabushiki Kaisha Yakult Honsha
    Inventors: Akira Asai, Kenji Matsuno, Naohisa Ogo, Takane Yokotagawa, Osamu Takahashi, Yasuto Akiyama, Tadashi Ashizawa, Tadashi Okawara
  • Publication number: 20120302524
    Abstract: Provided is a 1,3,4-oxadiazole-2-carboxamide compound which has STAT3 inhibitory activity and is useful as an anticancer agent. Provided is a 1,3,4-oxadiazole-2-carboxamide compound represented by formula (I) or a pharmacologically acceptable salt thereof (in the formula, Ar represents a furyl group or the like; R1 represents a hydrogen atom or the like; and —X—Y represents a diaryl group such as a biphenyl group).
    Type: Application
    Filed: December 28, 2010
    Publication date: November 29, 2012
    Applicants: GENERAL INCORPORATED ASSOCIATION PHARMA VALLEY PROJECT SUPPORTING ORGANIZATION, PHARMA DESIGN, INC., KABUSHIKI KAISHA YAKULT HONSHA, KUMAMOTO HEALTH SCIENCE UNIVERSITY, SHIZUOKA PREFECTURE
    Inventors: Akira Asai, Kenji Matsuno, Naohisa Ogo, Osamu Takahashi, Yoshiaki Masuda, Ayumu Muroya, Yasuto Akiyama, Tadashi Ashizawa, Tadashi Okawara
  • Publication number: 20110172429
    Abstract: The present invention provides a STATS inhibitor containing as an active ingredient, a quinolinecarboxamide derivative represented by the formula (I) (in the formula, W represents a bond or an alkylene chain; X represents O, S, or NR34; and R1 to R8 and R34 each represent H, halogen, alkyl, phenyl, furyl, thienyl, or the like.), or a pharmacologically acceptable salt thereof.
    Type: Application
    Filed: July 10, 2009
    Publication date: July 14, 2011
    Applicants: PHARMA IP GENERAL INCORPORATED ASSOCIATION, PHARMA DESIGN, INC., SHIZUOKA PREFECTURE, KUMAMOTO HEALTH SCIENCE UNIVERSITY, KABUSHIKI KAISHA YAKULT HONSHA
    Inventors: Akira Asai, Kenji Matsuno, Naohisa Ogo, Takane Yokotagawa, Osamu Takahashi, Yasuto Akiyama, Tadashi Ashizawa, Tadashi Okawara
  • Patent number: 6492392
    Abstract: The present invention provides 2-piperidone compounds or pharmaceutically acceptable salts thereof, which have a potent activity of inhibiting the proliferation of tumor cells and thus are useful as medicaments, as well as antitumor agents containing these compounds. The 2-piperidone compound is represented by the following formula (I): wherein R1 represents —(CH2)nR1a {wherein n is an integer of from 0 to 5, and R1a represents amino, lower alkylamino, di(lower alkyl)amino, substituted or unsubstituted aryl, or a substituted or unsubstituted heterocyclic group}, and R2 and R3 independently represent lower alkyl which may be substituted by lower alkoxycarboyl; lower alkenyl, aralkyl or lower alkynyl which may be substituted by substituted or unsubstituted aryl or a substituted or unsubstituted heterocyclic group; substituted or unsubstituted aryl; or a substituted or unsubstituted heterocyclic group.
    Type: Grant
    Filed: January 12, 2000
    Date of Patent: December 10, 2002
    Assignees: Kyowa Hakko Kogyo Co., Ltd., Eli Lilly & Co.
    Inventors: Yutaka Kanda, Rieko Tanaka, Mitsunobu Hara, Jun Eishima, Shiro Akinaga, Tadashi Ashizawa
  • Patent number: 6080771
    Abstract: DC107 derivatives represented by formula (I) or pharmaceutically acceptable salts thereof which have antimicrobial activity and antitumor activity are provided: ##STR1## wherein R.sup.1 represents CO(CR.sup.4A R.sup.4B).sub.n1 (O(CH.sub.2).sub.p1).sub.n2 OR.sup.5 {wherein n1 represents an integer of 1 or 2; R.sup.4A and R.sup.4B are the same or different, and each represents hydrogen or lower alkyl; p1 and n2 each represents an integer of 1 to 10; and R.sup.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: June 27, 2000
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yutaka Kanda, Hitoshi Arai, Hiroyuki Yamaguchi, Tadashi Ashizawa, Shun-ichi Ikeda, Chikara Murakata, Tatsuya Tamaoki
  • Patent number: 5981558
    Abstract: DC107 derivatives represented by formula (I) or pharmaceutically acceptable salts thereof which have antimicrobial activity and antitumor activity are provided: ##STR1## wherein R.sup.1 represents hydrogen, lower alkoxyalkyl, aralkyloxyalkyl, lower alkoxyalkoxyalkyl, lower alkoxyalkoxyalkoxyalkyl, aralkyl, tetrahydropyranyl, COR.sup.4, or the like; R.sup.2 represents hydrogen or COR.sup.6 ; R.sup.3 represents --CH.sub.2 OCOR.sup.7, phthalimidomethyl, or the like; and W represents oxygen or NR.sup.8 (wherein R.sup.8 represents hydroxy, lower alkoxy, lower alkenyloxy, aralkyloxy, substituted or unsubstituted arylsulfonylamino, or lower alkoxycarbonylamino).
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: November 9, 1999
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Hitoshi Arai, Yutaka Kanda, Hiroyuki Yamaguchi, Tadashi Ashizawa, Chikara Murakata, Shun-ichi Ikeda, Tatsuya Tamaoki
  • Patent number: 5972997
    Abstract: The present invention relates to UCT1072 compounds represented by formula (I): wherein R.sup.1 and R.sup.2 together represent --CH(OH)CH.sub.2 O-- or --CH.sub.2 CH.sub.2 CH(OH)CH.sub.2 --.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: October 26, 1999
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tamio Mizukami, Akira Asai, Katsuhiko Ando, Shingo Kakita, Akira Mihara, Katsunori Kita, Yasuhiro Suzuki, Tadashi Ashizawa
  • Patent number: 5952355
    Abstract: The present invention relates to propenone derivatives represented by the following formula (I): ##STR1## wherein R.sup.1 represents hydrogen, substituted or unsubstituted lower alkyl, substituted or unsubstituted aryl, or YR.sup.5 (wherein Y represents S or O; and R.sup.5 represents substituted or unsubstituted lower alkyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, or a substituted or unsubstituted cyclic ether residue); R.sup.2 and R.sup.3 independently represent hydrogen, lower alkyl, or substituted or unsubstituted aralkyl, or alternatively R.sup.2 and R.sup.3 are combined to form substituted or unsubstituted methylene or ethylene; R.sup.4 represents hydrogen, hydroxy, lower alkyl, substituted or unsubstituted aralkyl, lower alkoxy, substituted or unsubstituted aralkyloxy, or halogen; and X represents substituted or unsubstituted indolyl; or pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: September 14, 1999
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Shun-Ichi Ikeda, Uichiro Kimura, Tadashi Ashizawa, Katsushige Gomi, Hiromitsu Saito, Masaji Kasai, Junji Kanazawa, Kimihito Sasaki, Etsuko Nukui, Masami Okabe, Soichiro Sato
  • Patent number: 5733924
    Abstract: DC107 derivatives represented by the formula (I): ##STR1## or pharmacologically acceptable slats thereof, ?wherein R.sup.1 is hydrogen, lower alkoxyalkyl, aralkyloxyalkyl, lower alkoxyalkoxyalkyl, lower alkoxyalkoxyalkoxyalkyl, aralkyl, tetrahydropyranyl, COR.sup.4 or the like; R.sup.2 represents hydrogen or COR.sup.5 ; R.sup.3 represents lower alkyl, lower alkenyl, aralkyl which may be substituted with substituted or unsubstituted aryl, lower alkoxyalkyl, aralkyloxyalkyl, substituted or unsubstituted aryloxyalkyl, lower alkoxycarbonylalkyl, lower alkanoyloxyalkyl, alicyclic alkanoyloxyalkyl or the like, or bonds to Y to represent a single bond; Y bonds to R.sup.3 to represent a single bond, or bonds to Z to represent a single bond; Z represents hydrogen or bonds to Y to represent a single bond; W represents oxygen or NR.sup.6, with the proviso that the compound wherein R.sup.1, R.sup.2 and Z each represents hydrogen, R.sup.3 bonds to Y to represent a single bond, and W represents oxygen (DC107) is excluded.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: March 31, 1998
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yutaka Kanda, Yutaka Saitoh, Hiromitsu Saito, Tadashi Ashizawa, Kazuyo Sugiyama, Katsushige Gomi, Shingo Kakita, Yuichi Takahashi, Chikara Murakata
  • Patent number: 5717110
    Abstract: This invention relates to UCH15 compounds of the formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a hydroxyl group.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: February 10, 1998
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tamio Mizukami, Akira Asai, Yoshinori Yamashita, Hirofumi Nakano, Shingo Kakita, Youichi Uosaki, Keiko Ochiai, Tadashi Ashizawa, Akira Mihara
  • Patent number: 5656736
    Abstract: The present invention relates to the compound UCH9 represented by the following formula: ##STR1## which has antibacterial and anti-tumor activity, and pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: August 12, 1997
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Hirofumi Nakano, Harumi Ogawa, Yoshinori Yamashita, Ritsuko Katahira, Shigeru Chiba, Toshiaki Iwasaki, Tadashi Ashizawa
  • Patent number: 5334611
    Abstract: Novel mitomycin derivatives represented by the formula (I) are obtained by introducing a substituent at the 6-position. The mitomycin derivatives of the present invention have an antitumor activity.
    Type: Grant
    Filed: August 3, 1993
    Date of Patent: August 2, 1994
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Hitoshi Arai, Yutaka Kanda, Motomichi Kono, Masaji Kasai, Tadashi Ashizawa, Katsushige Gomi
  • Patent number: 5256685
    Abstract: Novel mitomycin derivatives represented by the formula (I) are obtained by introducing a substituent at the 6-position. The mitomycin derivatives of the present invention have an antitumor activity.
    Type: Grant
    Filed: March 26, 1992
    Date of Patent: October 26, 1993
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Hitoshi Arai, Yutaka Kanda, Motomichi Kono, Masaji Kasai, Tadashi Ashizawa, Katsushige Gomi
  • Patent number: 5220026
    Abstract: Disclosed is pyrazoloacridone derivatives represented by formula (I): ##STR1## wherein: each of R.sup.1a, R.sup.1b, R.sup.1c and R.sup.1d independently represents hydrogen, lower alkyl, --(CH.sub.2).sub.p --Xwherein p represents an integer of 1 to 6, and X represents hydroxy, lower alkoxy or --NR.sup.2a R.sup.2bwherein each of R.sup.2a and R.sup.2b independently represents hydrogen, lower alkyl, or --(CH.sub.2).sub.m --Ywherein m represents an integer of 1 to 6, and Y represents hydroxy, lower alkoxy or --NR.sup.3a R.sup.3bwherein each of R.sup.3a and R.sup.3b independently represents hydrogen or lower alkylor --CH[(CH.sub.2).sub.n OH].sub.2wherein n represents an integer of 1 to 5; or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: June 15, 1993
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yukiteru Mimura, Yasushi Shida, Masaji Kasai, Tadashi Ashizawa, Katsushige Gomi
  • Patent number: 5218126
    Abstract: Disclosed are mitomycin derivatives of formula (I): ##STR1## where W represents halogen; X represents methoxy, amino or ethylenimino; Y represents hydrogen or methyl; Z represents hydrogen or methyl; and one of R.sup.1 and R.sup.2 represents carbamoyloxymethyl, and the other represents hydrogen. The derivatives are usable as an antitumor and antibacterial agent.
    Type: Grant
    Filed: September 5, 1991
    Date of Patent: June 8, 1993
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Hitoshi Arai, Masaji Kasai, Katsushige Gomi, Tadashi Ashizawa
  • Patent number: 5180825
    Abstract: Disclosed in a mitomycin derivative represented by the formula (I): ##STR1## wherein W is a heterocyclic group.
    Type: Grant
    Filed: November 13, 1991
    Date of Patent: January 19, 1993
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Hitoshi Arai, Motomichi Kono, Masaji Kasai, Katsushige Gomi, Tadashi Ashizawa
  • Patent number: 5138059
    Abstract: Novel DC-89 compounds represented by the general formula: ##STR1## wherein X represents a single bond or --CH.sub.2 --; and when X represents a single bond, Y represents --CH.sub.2 Br or --CH.sub.2 Cl and when X represents --CH.sub.2 --, Y represents Br, are obtained by the present invention. The compounds have antibacterial and anti-tumor activity.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: August 11, 1992
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Keiichi Takahashi, Michio Ichimura, Shigeo Katsumata, Tatsuhiro Ogawa, Makoto Morimoto, Tadashi Ashizawa, Masaji Kasai, Kenichi Muroi, Hiromitsu Saito, Hiroshi Sano, Toru Yasuzawa