Patents by Inventor Toyoo Maeda

Toyoo Maeda 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 substances having carcinostatic and immunostimulating activity, process for preparing the same and carcinostatic agent containing the same
    Patent number: 4744985
    Abstract: Novel substances having carcinostatic and immunostimulating activity, which are obtained from a culture or its supernatant fluid prepared by culturing bacteria belonging to Fusobacterium genus. Said substances are useful for the treatment of cancerous diseases lower warm-blooded animals. This disclosure concerns such substances and a process for preparing the same and a carcinostatic agent containing the same.
    Type: Grant
    Filed: August 21, 1980
    Date of Patent: May 17, 1988
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Kenzo Tamai, Isamu Saikawa, Takashi Yasuda, Shohachi Murakami, Toyoo Maeda, Hisatsugu Tsuda, Hiroshi Sakai, Masatoshi Sugita, Yoshiko Yamamoto, Hisashi Minami, Takako Hori
  • Novel substances having antitumor and immunostimulating activity, process for preparing the same and antitumor agent containing the same
    Patent number: 4591558
    Abstract: Novel TF-2 substances having antitumor and immunostimulating activity, which are obtained from a culture or its supernatant fluid prepared by culturing bacteria belonging to Fusobacterium genus. Said substances are useful for the treatment of cancerous diseases of the mammals including human beings. This disclosure concerns such substances and a process for preparing the same and an antitumor agent containing the same.
    Type: Grant
    Filed: August 6, 1984
    Date of Patent: May 27, 1986
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Kenzo Tamai, Isamu Saikawa, Takashi Yasuda, Shohachi Murakami, Toyoo Maeda, Hisatsugu Tsuda, Hiroshi Sakai, Masatoshi Sugita, Yoshiko Yamamoto, Hisashi Minami, Takako Hori
  • Process for preparing substance having carcinostatic and immunostimulating activity
    Patent number: 4547462
    Abstract: This invention relates to a process for producing a TF-500 substance having carcinostatic and immunostimulating activities, which comprises subjecting organisms belonging to the Fusobacterium genus to extraction treatment with a dialkyl sulfoxide and obtaining said TF-500 substance from the resulting extract.
    Type: Grant
    Filed: August 16, 1983
    Date of Patent: October 15, 1985
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Kenzo Tamai, Isamu Saikawa, Takashi Yasuda, Shohachi Murakami, Toyoo Maeda, Hisatsugu Tsuda, Hiroshi Sakai, Masatoshi Sugita, Yoshiko Yamamoto, Hisashi Minami, Takako Hori
  • Substances having carcinostatic and immunostimulating activity
    Patent number: 4477437
    Abstract: Novel TF-2 substances having carcinostatic and immunostimulating activity, which are obtained from a culture or its supernatant fluid prepared by culturing bacteria belonging to Fusobacterium genus. Said substances are useful for the treatment of cancerous diseases of the mammals including human being. This disclosure concerns such substances and a process for preparing the same and a carcinostatic agent containing the same.
    Type: Grant
    Filed: February 11, 1982
    Date of Patent: October 16, 1984
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Kenzo Tamai, Isamu Saikawa, Takashi Yasuda, Shohachi Murakami, Toyoo Maeda, Hisatsugu Tsuda, Hiroshi Sakai, Masatoshi Sugita, Yoshiko Yamamoto, Hisashi Minami, Takako Hori
  • Pharmaceutical composition comprising extract from poison pouch contents of bee
    Patent number: 4444753
    Abstract: A composition comprising a component obtained by deproteinizing an extract from the poison pouch contents of bee has an immunostimulating activity, a carcinostatic activity, an effect of enhancing the antibacterial activity of an antibacterial substance and an effect of enhancing the carcinostatic activity of a carcinostatic substance. This invention is directed to a carcinostatic, immunostimulating and antibacterial agent comprising said composition.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: April 24, 1984
    Assignee: Toyama Chemical Company, Ltd.
    Inventors: Isamu Saikawa, Takashi Yasuda, Shohachi Murakami, Toyoo Maeda, Akira Yotsuji, Masahiro Takahata, Hisatsugu Tsuda, Hidetada Mikami, Hiroshi Sakai, Toshinori Ohashi
  • Pharmaceutical composition comprising extract from poison pouch contents of bee useful for treating decreased immunity
    Patent number: 4370316
    Abstract: A method for treating a host mammal having a decreased immunity, comprising administering to said host mammal an immunostimulating effective amount of the deproteinized extract from the poison pouch contents of bee B-T, is disclosed.
    Type: Grant
    Filed: May 7, 1980
    Date of Patent: January 25, 1983
    Assignee: Toyama Chemical Company, Ltd.
    Inventors: Isamu Saikawa, Takashi Yasuda, Shohachi Murakami, Toyoo Maeda, Akira Yotsuji, Masahiro Takahata, Hisatsugu Tsuda, Hidetada Mikami, Hiroshi Sakai, Toshinori Ohashi