Patents by Inventor Katsuya Togawa
Katsuya Togawa 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).
-
Patent number: 9028688Abstract: Blood separation material which separates blood collected in a blood-sampling container, into blood cells and plasma or serum within a short period of time. An apparatus for separating blood with the blood separation material. An instrument for separating blood having a first hollow needle extending toward one end, a second hollow needle extending toward the other end, a tubular container with an inner space in which the blood flows, and a blood separation material. A container with a first channel for supplying blood into an inner space through which blood flows from the needlepoint of the first hollow needle into the inner space, a second channel for blood to flow out from the inner space toward the needlepoint of the second hollow needle, and a third channel which allows air to flow from the outer space toward the needlepoint of the first hollow needle.Type: GrantFiled: June 26, 2006Date of Patent: May 12, 2015Assignee: Sekisui Chemical Co., Ltd.Inventors: Ryusuke Okamoto, Katsuya Togawa
-
Patent number: 8795957Abstract: The present invention provides a blood collection container capable of allowing blood to coagulate in a short time and preventing blood from coagulating with bubbles contained therein and thus preventing formation of bubbly clots when used to collect blood therein. A blood collection container 1 stores a blood coagulation promoting agent 4 for promoting blood coagulation and an antifoaming agent 5, which is a polyoxyalkylene or a derivative thereof. The amount of the antifoaming agent 5 is 2.0×10?3 to 0.2 mg per mL of blood to be collected in the blood collection container 1.Type: GrantFiled: February 23, 2011Date of Patent: August 5, 2014Assignee: Sekisui Medical Co., Ltd.Inventors: Tomonori Inoue, Yuuji Setoguchi, Ryusuke Okamoto, Katsuya Togawa
-
Patent number: 8586323Abstract: The present invention provides a blood coagulation promoter capable of exerting both excellent blood coagulation promoting ability and excellent blood clot detaching ability; and a blood collection tube accommodating the blood coagulation promoter. The present invention provides a blood coagulation promoter which includes a hardly water soluble polyoxyalkylene derivative; a partially saponificated polyvinyl alcohol; at least one substance selected from the group consisting of adsorptive inorganic substances and hydrolases capable of hydrolyzing a bond between Arg and an arbitrary amino acid reside and/or a bond between Lys and an arbitrary amino acid residue in a peptide chain; a polyvinylpyrrolidone; and preferably a water-soluble silicone oil, and a blood collection tube in which the blood coagulation promoter is accommodated in a tubular vessel having a bottom.Type: GrantFiled: April 21, 2004Date of Patent: November 19, 2013Assignee: Sekisui Chemical Co., Ltd.Inventors: Ryusuke Okamoto, Katsuya Togawa, Hironobu Isogawa
-
Patent number: 7993847Abstract: A Plasma or serum separation membrane that enables omitting centrifugal separation, is free from hemolysis attributed to destruction of red blood cells and realizes easy and rapid separation of plasma or serum from blood; and a filter apparatus including the plasma or serum separation membrane. In particular, a plasma or serum separation membrane being a membrane for separation of plasma or serum from blood and having a void ratio of 30% or below; and a filter apparatus comprising a filter member capable of attaining movement of plasma swifter than movement of blood cells and a plasma or serum separation membrane connected in series with a rear side of the filter member.Type: GrantFiled: December 7, 2006Date of Patent: August 9, 2011Assignees: Sekisui Medical Co., Ltd., Nittobo Medical Co., Ltd., Toyo Boseki Kabushiki KaishaInventors: Katsuya Togawa, Ryusuke Okamoto, Hironobu Isogawa
-
Publication number: 20110144536Abstract: The present invention provides a blood collection container capable of allowing blood to coagulate in a short time and preventing blood from coagulating with bubbles contained therein and thus preventing formation of bubbly clots when used to collect blood therein. A blood collection container 1 stores a blood coagulation promoting agent 4 for promoting blood coagulation and an antifoaming agent 5, which is a polyoxyalkylene or a derivative thereof. The amount of the antifoaming agent 5 is 2.0×10?3 to 0.2 mg per mL of blood to be collected in the blood collection container 1.Type: ApplicationFiled: February 23, 2011Publication date: June 16, 2011Inventors: Tomonori Inoue, Yuuji Setoguchi, Ryusuke Okamoto, Katsuya Togawa
-
Patent number: 7927810Abstract: A Plasma or serum separation membrane that enables omitting centrifugal separation, is free from hemolysis attributed to destruction of red blood cells and realizes easy and rapid separation of plasma or serum from blood; and a filter apparatus including the plasma or serum separation membrane. In particular, a plasma or serum separation membrane being a membrane for separation of plasma or serum from blood and having a void ratio of 30% or below; and a filter apparatus comprising a filter member capable of attaining movement of plasma swifter than movement of blood cells and a plasma or serum separation membrane connected in series with a rear side of the filter member.Type: GrantFiled: November 18, 2003Date of Patent: April 19, 2011Inventors: Katsuya Togawa, Ryusuke Okamoto, Hironobu Isogawa
-
Publication number: 20100248329Abstract: The present invention provides a blood coagulation promoter capable of exerting both excellent blood coagulation promoting ability and excellent blood clot detaching ability, and a blood collection tube accommodating the blood coagulation promoter. The present invention provides a blood coagulation promoter which includes a hardly water soluble polyoxyalkylene derivative; a partially saponificated polyvinyl alcohol; at least one substance selected from the group consisting of adsorptive inorganic substances and hydrolases capable of hydrolyzing a bond between Arg and an arbitrary amino acid reside and/or a bond between Lys and an arbitrary amino acid residue in a peptide chain; a polyvinylpyrrolidone; and preferably a water-soluble silicone oil, and a blood collection tube in which the blood coagulation promoter is accommodated in a tubular vessel having a bottom.Type: ApplicationFiled: April 9, 2010Publication date: September 30, 2010Inventors: Ryusuke Okamoto, Katsuya Togawa, Hironobu Isogawa
-
Patent number: 7767466Abstract: A method for filtrating liquid sample such as blood or the like with a filter member utilizing inner vacuum, the same enabling completion of filtration without removing a stopper, and superior in safety and being free from contamination. In collecting and filtrating the liquid sample using a sample collection vessel 1, in which a sample-collecting part 3 containing a filter member 4 is inserted in a vacuumed sample-storing part 2, the sample storing part 2 and sample-collecting part 3 are air-tightly sealed with a stopper 5, the liquid sample such as blood or the like collected in the sample-collecting part 3 is filtrated by the filter member 4. When the filtration stops, a hollow needle 12 is pierced through the stopper 5 and thus the sample-collecting part 3 is communicated with atmosphere, thereby the pressure in the sample-collecting part 3 being enhanced upper than in atmosphere to enable the filtration again.Type: GrantFiled: April 22, 2004Date of Patent: August 3, 2010Assignees: Sekisui Medical Co., Ltd., I-Design Co., Ltd., Nittobo Medical Co., Ltd.Inventors: Katsuya Togawa, Hironobu Isogawa
-
Patent number: 7744820Abstract: A Plasma or serum separation membrane that enables omitting centrifugal separation, is free from hemolysis attributed to destruction of red blood cells and realizes easy and rapid separation of plasma or serum from blood; and a filter apparatus including the plasma or serum separation membrane. In particular, a plasma or serum separation membrane being a membrane for separation of plasma or serum from blood and having a void ratio of 30% or below; and a filter apparatus comprising a filter member capable of attaining movement of plasma swifter than movement of blood cells and a plasma or serum separation membrane connected in series with a rear side of the filter member.Type: GrantFiled: December 7, 2006Date of Patent: June 29, 2010Inventors: Katsuya Togawa, Ryusuke Okamoto, Hironobu Isogawa
-
Publication number: 20090050553Abstract: It is intended to provide a material by which blood having been collected into a blood-sampling container can be conveniently separated into blood cells and the plasma or the serum within a short period of time, and an apparatus for separating blood which is provided with this blood separation material.Type: ApplicationFiled: June 26, 2006Publication date: February 26, 2009Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Ryusuke Okamoto, Katsuya Togawa
-
Publication number: 20070105156Abstract: A Plasma or serum separation membrane that enables omitting centrifugal separation, is free from hemolysis attributed to destruction of red blood cells and realizes easy and rapid separation of plasma or serum from blood; and a filter apparatus including the plasma or serum separation membrane. In particular, a plasma or serum separation membrane being a membrane for separation of plasma or serum from blood and having a void ratio of 30% or below; and a filter apparatus comprising a filter member capable of attaining movement of plasma swifter than movement of blood cells and a plasma or serum separation membrane connected in series with a rear side of the filter member.Type: ApplicationFiled: December 7, 2006Publication date: May 10, 2007Inventors: Katsuya Togawa, Ryusuke Okamoto, Hironobu Isogawa
-
Publication number: 20070082370Abstract: A Plasma or serum separation membrane that enables omitting centrifugal separation, is free from hemolysis attributed to destruction of red blood cells and realizes easy and rapid separation of plasma or serum from blood; and a filter apparatus including the plasma or serum separation membrane. In particular, a plasma or serum separation membrane being a membrane for separation of plasma or serum from blood and having a void ratio of 30% or below; and a filter apparatus comprising a filter member capable of attaining movement of plasma swifter than movement of blood cells and a plasma or serum separation membrane connected in series with a rear side of the filter member.Type: ApplicationFiled: December 7, 2006Publication date: April 12, 2007Inventors: Katsuya Togawa, Ryusuke Okamoto, Hironobu Isogawa
-
Publication number: 20060199275Abstract: A method for filtrating liquid sample such as blood or the like with a filter member utilizing inner vacuum, the same enabling completion of filtration without removing a stopper, and superior in safety and being free from contamination. In collecting and filtrating the liquid sample using a sample collection vessel 1, in which a sample-collecting part 3 containing a filter member 4 is inserted in a vacuumed sample-storing part 2, the sample storing part 2 and sample-collecting part 3 are air-tightly sealed with a stopper 5, the liquid sample such as blood or the like collected in the sample-collecting part 3 is filtrated by the filter member 4. When the filtration stops, a hollow needle 12 is pierced through the stopper 5 and thus the sample-collecting part 3 is communicated with atmosphere, thereby the pressure in the sample-collecting part 3 being enhanced upper than in atmosphere to enable the filtration again.Type: ApplicationFiled: April 22, 2004Publication date: September 7, 2006Inventors: Katsuya Togawa, Hironobu Isogawa
-
Publication number: 20060171915Abstract: The present invention provides a blood coagulation promoter capable of exerting both excellent blood coagulation promoting ability and excellent blood clot detaching ability; and a blood collection tube accommodating the blood coagulation promoter. The present invention provides a blood coagulation promoter which includes a hardly water soluble polyoxyalkylene derivative; a partially saponificated polyvinyl alcohol; at least one substance selected from the group consisting of adsorptive inorganic substances and hydrolases capable of hydrolyzing a bond between Arg and an arbitrary amino acid reside and/or a bond between Lys and an arbitrary amino acid residue in a peptide chain; a polyvinylpyrrolidone; and preferably a water-soluble silicone oil, and a blood collection tube in which the blood coagulation promoter is accommodated in a tubular vessel having a bottom.Type: ApplicationFiled: April 21, 2004Publication date: August 3, 2006Inventors: Ryusuke Okamoto, Katsuya Togawa, Hironobu Isogawa
-
Publication number: 20060029923Abstract: A Plasma or serum separation membrane that enables omitting centrifugal separation, is free from hemolysis attributed to destruction of red blood cells and realizes easy and rapid separation of plasma or serum from blood; and a filter apparatus including the plasma or serum separation membrane. In particular, a plasma or serum separation membrane being a membrane for separation of plasma or serum from blood and having a void ratio of 30% or below; and a filter apparatus comprising a filter member capable of attaining movement of plasma swifter than movement of blood cells and a plasma or serum separation membrane connected in series with a rear side of the filter member.Type: ApplicationFiled: November 18, 2003Publication date: February 9, 2006Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Katsuya Togawa, Ryusuke Okamoto, Hironobu Isogawa