Patents by Inventor Akemi Higo

Akemi Higo 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).

  • Method of separating serum from whole blood
    Patent number: 6225130
    Abstract: A method for separating serum from whole blood in a vessel at an insertion speed of 30 cm/sec or less and maintaining the suction pressure of the suction nozzle at 400 mm Hg or less. Improved analytical results are obtained because the serum can be produced without hemolysis.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: May 1, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masao Kitajima, Akemi Higo, Shigeru Tezuka
  • Blood filter unit
    Patent number: 6170671
    Abstract: The blood filter unit of the invention is composed of a blood filtering material made of glass fiber filter and microporous membrane and a holder having a blood inlet and a filtrate outlet. The holder accommodates the blood filtering material so that the microporous membrane is located on the filtrate outlet side, provides a space between the blood filtering material and the filtrate outlet, and provides a means for preventing adhesion of the blood filtering material on the filtrate outlet side. By using the blood filter unit, a necessary volume of plasma or serum for analysis can be separated surely, irrespective of hematocrit value of the blood.
    Type: Grant
    Filed: April 12, 1999
    Date of Patent: January 9, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masao Kitajima, Kenichiro Yazawa, Shigeru Tezuka, Fumio Sugaya, Akemi Higo, Kiyotaka Fujiwara
  • Plasma collecting device
    Patent number: 5996811
    Abstract: This invention relates to a plasma-collecting device which comprises a blood filtering material comprising glass fiber filter and microporous membrane, a holder having a blood inlet and a plasma outlet accommodating the blood filtering material, a blood-collecting needle being connected to the blood inlet, and a plasma receiver being provided on the plasma outlet side. The plasma-collecting device can collect a necessary amount of plasma for analysis from blood vessel directly, easily and surely.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: December 7, 1999
    Assignee: Fuji Photo Film Co. Ltd.
    Inventors: Masao Kitajima, Akemi Higo
  • Blood filter unit
    Patent number: 5979669
    Abstract: A blood filter unit having a blood filter holder containing a blood filtering material of a glass fiber filter and a microporous membrane is described. The holder has a blood inlet and a filtrate outlet, and accommodates the blood filtering material so that the microporous membrane is located on the filtrate outlet side and has a space between the blood filtering material and the filtrate outlet. The holder provides means for preventing adhesion of the blood filtering material on the filtrate outlet side. The inventive blood filter unit allows separation of a desired volume of plasma or serum for analysis without interference by the hematocrit value of the blood.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: November 9, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masao Kitajima, Kenichiro Yazawa, Shigeru Tezuka, Fumio Sugaya, Akemi Higo, Kiyotaka Fujiwara