Patents by Inventor Kazuhiro Aihara

Kazuhiro Aihara 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).

  • Novel carbapenum derivatives
    Publication number: 20030027809
    Abstract: An objective of the present invention is to provide carbapenem derivatives which have potent antibiotic activity against MRSA, PRSP, Influenzavirus, and &bgr;-lactamase-producing bacteria and are stable against DHP-1.
    Type: Application
    Filed: July 25, 2002
    Publication date: February 6, 2003
    Inventors: Yuko Kano, Takahisa Maruyama, Yumiko Sambongi, Kazuhiro Aihara, Kunio Atsumi, Kastuyoshi Iwamatsu, Takashi Ida
  • Novel carbapenem derivatives of quarternary salt type
    Publication number: 20030022881
    Abstract: An objective of the present invention is to provide carbapenem derivatives which have potent antibiotic activity against MRSA, PRSP, Influenzavirus, and &bgr;-lactamase-producing bacteria and are stable against DHP-1.
    Type: Application
    Filed: July 25, 2002
    Publication date: January 30, 2003
    Inventors: Yuko Kano, Takahisa Maruyama, Yasuo Yamamoto, Eiki Shitara, Toshiro Sasaki, Kazuhiro Aihara, Kunio Atsumi, Katsuyoshi Iwamatsu, Takashi Ida
  • Carbapenem derivatives
    Patent number: 6458780
    Abstract: Disclosed is a novel carbapenem derivative having a substituted imidazo[5,1-b]thiazole group at the 2-position on the carbapenem ring have high anti-microbial activities against &bgr;-lactamase producing bacteria, MRSA, resistant-Pseudomonas aeruginosa, PRSP, enterococci, and influenza, and high stabilities to DHP-1.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: October 1, 2002
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Yuko Kano, Toshiro Sasaki, Yumiko Sambongi, Kiyoshi Tanabe, Yoshihisa Akiyama, Hideo Kitagawa, Takahisa Maruyama, Hiromasa Takizawa, Takashi Ando, Kazuhiro Aihara, Kunio Atsumi, Katsuyoshi Iwamatsu, Takashi Ida
  • Carbapenem derivatives
    Patent number: 6310056
    Abstract: The carbapenem derivatives represented by the following formula (I) is disclosed.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: October 30, 2001
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Yuko Kano, Kazuhiro Aihara, Yumiko Toyooka, Toshiro Sasaki, Hiromasa Takizawa, Kenichi Fushihara, Kazuko Kobayashi, Kunio Atsumi, Katsuyoshi Iwamatsu, Takashi Ida
  • Imidazo[5,1-b]thiazol-3-yl carbapenem antimicrobials
    Patent number: 6180622
    Abstract: Compounds of formula (I) and compounds of formula (II) which have potent antimicrobial activity against a wide range of bacteria including Gram-positive bacteria and Gram-negative bacteria as well as heve potent antimicrobial activity against various &bgr;-lactamase-producing bacteria, MRSA, and resistant Pseudomonas aeruginosa and are very stable against DHP-1.
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: January 30, 2001
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Kazuhiro Aihara, Toshiro Sasaki, Yumiko Toyooka, Yuko Kano, Kunio Atsumi, Katsuyoshi Iwamatsu, Takashi Ida
  • Carbapenem derivatives
    Patent number: 5990101
    Abstract: Novel carbapenem derivatives, represented by the following formula (I), having a substituted or unsubstituted imidazo[5,1-b]thiazolium-6-ylmethyl group at the 2-position are disclosed. The compounds represented by the formula (I) have potent antibacterial activity against a wide spectrum of bacteria from Gram-positive bacteria to Gram-negative bacteria including Pseudomonas aeruginosa and, in addition, have potent antibacterial activity against various .beta.-lactamase-producing bacteria and MRSA and are very stable against DHP-1.
    Type: Grant
    Filed: March 12, 1997
    Date of Patent: November 23, 1999
    Assignee: Meiji Seika Kabushiki Kaisha
    Inventors: Kazuhiro Aihara, Yuko Kano, Sohjiro Shiokawa, Toshiro Sasaki, Fumihito Setsu, Yumiko Toyooka, Miyuki Ishii, Kunio Atsumi, Katsuyoshi Iwamatsu, Atsushi Tamura
  • Printer
    Patent number: D418158
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: December 28, 1999
    Assignees: Plantec Architects, Seiko Instruments Inc.
    Inventors: Kazuhiro Aihara, Masahumi Tsukuda