Patents by Inventor Takehiko Yamazaki

Takehiko Yamazaki 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: 20120251510
    Abstract: It was revealed that the intravenous administration of HMGB-1 and S100A8 promoted the healing of skin ulcer by recruiting bone marrow-derived cells to the site of skin ulcer. Furthermore, when HMGB-1 was intravenously administered to cerebral infarction model mice after creation of cerebral infarction, bone marrow-derived cells expressing nerve cell markers were detected in their brain. A marked cerebral infarct-reducing effect was observed in mice intravenously administered with HMGB-1 as compared to the control. The post-cerebral infarction survival rate was increased in the intravenous HMGB-1 administration group. The involvement of bone marrow pluripotent stem cells in the process of bone fracture healing was assessed using mice, and the result demonstrated that bone marrow-derived cells distant from the damaged site migrated to the bone fracture site to repair the damaged tissue.
    Type: Application
    Filed: October 28, 2010
    Publication date: October 4, 2012
    Inventors: Katsuto Tamai, Yasufumi Kaneda, Takehiko Yamazaki, Takenao Chino, Kotaro Saga, Mayumi Endo
  • Publication number: 20110104803
    Abstract: Biologically low invasive vessels are filled with biological factors that have the activity of mobilizing specific functional cells in the body. The vessels are indwelled in the body. After specific functional cells are mobilized into the vessels, the vessels are removed from the body to collect functional cell populations mobilized to the vessels. Alternatively, the cells are directly collected from the vessels indwelled in the body.
    Type: Application
    Filed: April 30, 2009
    Publication date: May 5, 2011
    Inventors: Katsuto Tamai, Takehiko Yamazaki, Takenao Chino, Yasufumi Kaneda
  • Publication number: 20110097309
    Abstract: The present inventors assessed the possibility that bone marrow-derived cells are mobilized to the grafted skin from nonskin tissues and contribute to skin tissue regeneration during the engraftment of grafted skin on biological tissues. As a result, the present inventors for the first time in the world demonstrated that: (1) a large number of bone marrow-derived cells are mobilized to grafted skin; (2) mobilized bone marrow-derived cells differentiate into any of dermal fibroblasts, adipocytes, muscle cells, vascular endothelial cells, and epidermal keratinocytes in grafted skin, and thus mobilized bone marrow-derived cells include bone marrow-derived mesenchymal stem cells; (3) S100A8 and S100A9 released from necrotic tissues of grafted skin are responsible for mobilizing bone marrow-derived mesenchymal stem cells to the grafted skin from peripheral blood; and (4) purified S100A8 and S100A9 promote the migration of mesenchymal stem cells isolated/cultured from the bone marrow.
    Type: Application
    Filed: April 30, 2009
    Publication date: April 28, 2011
    Inventors: Katsuto Tamai, Takehiko Yamazaki, Takenao Chino, Yasufumi Kaneda
  • Publication number: 20110091928
    Abstract: The present invention for the first time demonstrated that: (1) bone marrow-derived pluripotent tissue stem cells can be induced in peripheral blood by intravenously administering tissue extract prepared from isolated skin pieces; (2) the substance in the isolated skin pieces, which is responsible for mobilizing bone marrow-derived pluripotent tissue stem cells to peripheral blood, is HMGB1; and (3) HMGB1 with the activity of mobilizing bone marrow-derived pluripotent stem cells to peripheral blood can be easily purified from cultured cells.
    Type: Application
    Filed: April 30, 2009
    Publication date: April 21, 2011
    Inventors: Katsuto Tamai, Takehiko Yamazaki, Takenao Chino, Yasufumi Kaneda
  • Publication number: 20090202500
    Abstract: The present inventors revealed the following for the first time in the world: 1) a large amount of bone marrow-derived cells are mobilized to grafted skin; 2) the mobilized bone marrow-derived cells are differentiated into any of dermal fibroblasts, adipocytes, muscle cells, vascular endothelial cells, and epidermal keratinocytes in the grafted skin, and the mobilized bone marrow derived cells include bone marrow-derived mesenchymal stem cells; 3) the factors which mobilize bone marrow-derived mesenchymal stem cells from peripheral blood to the grafted skin are HMGB1, HMGB2, and HMGB3 released from the necrosed tissue of recipient skin; 4) purified HMGB1, HMGB2, and HMGB3 promote the migration of mesenchymal stem cells isolated and cultured from bone marrow; 5) activators containing HMGB1 which allows the migration of bone marrow mesenchymal stem cells can be conveniently purified from several organ extracts including skin, brain, and heart; 6) activators which allow the migration of bone marrow mesenchymal
    Type: Application
    Filed: October 30, 2007
    Publication date: August 13, 2009
    Applicant: GENOMIX CO., LTD.
    Inventors: Katsuto Tamai, Takehiko Yamazaki, Yasufumi Kaneda
  • Patent number: 5900841
    Abstract: An antenna device for use in a motor vehicle comprises a plastic plate which is attached to an inside wall of a given part of the vehicle; and an antenna proper which includes a plastic film and an electrically conductive antenna pattern printed on the plastic film. The antenna proper is interposed between the plastic plate and the inside wall in such a manner that the printed antenna pattern is interposed between the plastic film and the plastic plate.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: May 4, 1999
    Assignees: Nihon Plast Co., Ltd, Nissan Motor Co., Ltd
    Inventors: Tomio Hirata, Takehiko Yamazaki
  • Patent number: 5621251
    Abstract: An antitheft apparatus for an automotive vehicle includes: door lock mechanism assemblies (110, 210, 310 and 410) for locking vehicle doors, respectively; constraining (stopper) members for constraining the door lock mechanism assemblies once actuated to a lock status so as not to be unlocked, respectively; a set switch (125) for outputting a constraint command for constraining the door lock mechanism assemblies once actuated to the lock status so as not to be unlocked; and a controller (1) responsive to the constraint command outputted by the set switch, for first locking the doors by the door lock mechanism assemblies and then constraining the door lock mechanism assemblies to the lock status by use of constraining members, respectively.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: April 15, 1997
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Takehiko Yamazaki