Patents by Inventor Takamitsu Ohkawara

Takamitsu Ohkawara 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).

  • Liquid-medicine injection port device, and liquid-medicine container provided with the same
    Patent number: 7322969
    Abstract: A liquid-medicine injection port device includes: a liquid-medicine inlet which is formed at its upper end; a liquid-medicine outlet which is formed at its lower end which is connectable to a liquid-medicine container; a liquid passageway which connects the liquid-medicine inlet and the liquid-medicine outlet; a germ-removal filter which is provided in the liquid passageway; and a closure which closes the liquid passageway downstream from the germ-removal filter and opens it easily. Further, a liquid-medicine container is provided with this liquid-medicine injection port device. Or further, the liquid-medicine container has a two-chamber structure in which an injection chamber provided with the liquid-medicine injection port device which the germ-removal filter is attached to, and a storage chamber storing a liquid medicine are divided by a weak seal portion having such a strength that it is easily peeled.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: January 29, 2008
    Assignee: Nipro Corporation
    Inventors: Hiroyuki Hattori, Takamitsu Ohkawara, Atsushi Ishikawa
  • Chemical feeding port and chemical container with the port
    Publication number: 20040267228
    Abstract: A liquid-medicine injection port device includes: a liquid-medicine inlet which is formed at its upper end; a liquid-medicine outlet which is formed at its lower end which is connectable to a liquid-medicine container; a liquid passageway which connects the liquid-medicine inlet and the liquid-medicine outlet; a germ-removal filter which is provided in the liquid passageway; and a closure which closes the liquid passageway downstream from the germ-removal filter and opens it easily. Further, a liquid-medicine container is provided with this liquid-medicine injection port device. Or further, the liquid-medicine container has a two-chamber structure in which an injection chamber provided with the liquid-medicine injection port device which the germ-removal filter is attached to, and a storage chamber storing a liquid medicine, are divided by a weak seal portion having such a strength that it is easily peeled.
    Type: Application
    Filed: March 4, 2004
    Publication date: December 30, 2004
    Inventors: Hiroyuki Hattori, Takamitsu Ohkawara, Atsushi Ishikawa