Patents Assigned to Maeda Sangyo Co., Ltd.
  • Patent number: 6425886
    Abstract: The present invention provides a syringe including a tubular barrel. The tubular barrel has an open proximal end, a distal end with a fluid expelling passage defined therein, and a barrel chamber. A seal is disposed within the barrel chamber a predetermined distance away from the open proximal end in fluid-tight and axially-sliding engagement with the barrel chamber, so that fluid held in the barrel chamber between the fluid expelling passage and the seal can be expelled from the barrel chamber to the outside via the fluid expelling passage by sliding the seal towards the fluid expelling passage.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: July 30, 2002
    Assignees: Maeda Sangyo Co., Ltd., Taisei Kako Co., Ltd.
    Inventors: Teiichirou Sawa, Hirotaka Nishida, Taiji Horita
  • Patent number: 6162200
    Abstract: The present invention provides a syringe including a tubular barrel. The tubular barrel has an open proximal end, a distal end with a fluid expelling passage defined therein, and a barrel chamber. A seal is disposed within the barrel chamber a predetermined distance away from the open proximal end in fluid-tight and axially-sliding engagement with the barrel chamber, so that fluid held in the barrel chamber between the fluid expelling passage and the seal can be expelled from the barrel chamber to the outside via the fluid expelling passage by sliding the seal towards the fluid expelling passage.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: December 19, 2000
    Assignees: Maeda Sangyo Co., Ltd., Taisei Kako Co., Ltd.
    Inventors: Teiichirou Sawa, Hirotaka Nishida, Taiji Horita