Patents by Inventor Hitoshi Tsuruta

Hitoshi Tsuruta 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: 10836996
    Abstract: To provide a cell culture kit including cultured living cells of various donors, and a manufacturing method thereof. The cell culture kit includes a culture plate and living cells cultured thereon. The culture plate includes a plurality of microchambers (33) and living cells derived from various donors are adhered to surfaces of the plurality of microchambers (33). Specifically, living cells D1, D2, and D3 derived from various donors are adhered to the plurality of microchambers (33). In each microchamber (33), living cells derived from one donor or living cells derived from various donors may be cultured. The living cells derived from various donors are adhered and cultured in the cell culture kit as a whole, which makes it possible to provide a cell culture kit to conduct a test using cells derived from various donors.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: November 17, 2020
    Assignees: Corning Incorporated, Public University Corporation Yokohama City University
    Inventors: Yoko Itchoda, Go Tazaki, Motohiro Fukuda, Hitoshi Tsuruta, Hideki Taniguchi
  • Patent number: 9428721
    Abstract: Provided is a cell culture method whereby an in vivo function can be sustained over a long period of time and culture can be conducted using the minimum number of cells required. The cell culture method includes culturing undifferentiated cells in a layered state in a partitioned micro-space and obtains differentiated cells. When screening a pharmaceutical agent, undifferentiated cells capable of differentiating into liver cells, intestinal epithelial cells, nerve cells, myocardial cells and vascular endothelial cells are preferred. Particularly, in the prediction of pharmacokinetics or the like for humans, human cells are preferred.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: August 30, 2016
    Assignees: Public University Corporation Yokohama City University, KURARAY Co., Ltd.
    Inventors: Hideki Taniguchi, Yun-Wen Zheng, Go Tazaki, Tomoko Kosaka, Hitoshi Tsuruta, Motohiro Fukuda
  • Publication number: 20160160175
    Abstract: To provide a cell culture kit including cultured living cells of various donors, and a manufacturing method thereof. The cell culture kit includes a culture plate and living cells cultured thereon. The culture plate includes a plurality of microchambers (33) and living cells derived from various donors are adhered to surfaces of the plurality of microchambers (33). Specifically, living cells D1, D2, and D3 derived from various donors are adhered to the plurality of microchambers (33). In each microchamber (33), living cells derived from one donor or living cells derived from various donors may be cultured. The living cells derived from various donors are adhered and cultured in the cell culture kit as a whole, which makes it possible to provide a cell culture kit to conduct a test using cells derived from various donors.
    Type: Application
    Filed: January 29, 2016
    Publication date: June 9, 2016
    Applicants: KURARAY CO., LTD., Public University Corp. Yokohama City University
    Inventors: Yoko ITCHODA, Go Tazaki, Motohiro Fukuda, Hitoshi Tsuruta, Hideki Taniguchi
  • Patent number: 9290735
    Abstract: To provide a cell culture method capable of sustaining in-vivo functions for a long time by suppressing dedifferentiation. A cell culture method in accordance with the present invention is to culture cells in a multi-layered state in a minute partitioned space and to obtain a tissue structure having a function resembling an in-vivo function. When the cells are mammary gland epithelial cells, a hollow acinus-like structure can be formed. The minute partitioned space is particularly preferably a micro container in a cell culture container having a plurality of such micro containers on the surface.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: March 22, 2016
    Assignees: National University Corporation Nagoya University, KURARAY Co., Ltd.
    Inventors: Masahiro Sokabe, Kishio Furuya, Go Tazaki, Hitoshi Tsuruta, Motohiro Fukuda
  • Publication number: 20110217725
    Abstract: To provide a cell culture kit including cultured living cells of various donors, and a manufacturing method thereof. The cell culture kit includes a culture plate and living cells cultured thereon. The culture plate includes a plurality of microchambers (33) and living cells derived from various donors are adhered to surfaces of the plurality of microchambers (33). Specifically, living cells D1, D2, and D3 derived from various donors are adhered to the plurality of microchambers (33). In each microchamber (33), living cells derived from one donor or living cells derived from various donors may be cultured. The living cells derived from various donors are adhered and cultured in the cell culture kit as a whole, which makes it possible to provide a cell culture kit to conduct a test using cells derived from various donors.
    Type: Application
    Filed: October 23, 2009
    Publication date: September 8, 2011
    Applicants: Kuraray Co., Ltd., Public University Corp. Yokohama City University
    Inventors: Yoko Itchoda, Go Tazaki, Motohiro Fukuda, Hitoshi Tsuruta, Hideki Taniguchi
  • Publication number: 20110207215
    Abstract: To provide a cell storage method to store living cells while maintaining the functions of the living cells. An aspect of the cell storage method is a method to store living cells (40) by using a cell culture chamber (20) including a plurality of the microchambers (11), the method including: culturing the living cells by being adhered to the surfaces of a plurality of micro spaces; and after the culturing, pouring the culture medium (50) into the cell culture chamber (20) so as to cover the plurality of microchambers (11), and storing the living cells. The living cells are adhered to a cell culture chamber of an appropriate size and cultured to form a three-dimensional structure. This enables maintaining the three-dimensional structure of the living cells and storage of the living cells while maintaining the functions thereof.
    Type: Application
    Filed: October 23, 2009
    Publication date: August 25, 2011
    Applicants: KURARAY CO., LTD., PUBLIC UNIVERSITY CORP. YOKOHAMA CITY UNIVERSITY
    Inventors: Yoko Itchoda, Go Tazaki, Motohiro Fukuda, Hitoshi Tsuruta, Hideki Taniguchi
  • Publication number: 20110045500
    Abstract: Provided is a cell culture method whereby an in vivo function can be sustained over a long period of time and culture can be conducted using the minimum number of cells required. The cell culture method includes culturing undifferentiated cells in a layered state in a partitioned micro-space and obtains differentiated cells. When screening a pharmaceutical agent, undifferentiated cells capable of differentiating into liver cells, intestinal epithelial cells, nerve cells, myocardial cells and vascular endothelial cells are preferred. Particularly, in the prediction of pharmacokinetics or the like for humans, human cells are preferred.
    Type: Application
    Filed: February 5, 2009
    Publication date: February 24, 2011
    Applicants: PUBLIC UNIVERSITY CORP. YOKOHAMA CITY UNIVERSITY, KURARAY CO., LTD.
    Inventors: Hideki Taniguchi, Yun-Wen Zheng, Go Tazaki, Tomoko Kosaka, Hitoshi Tsuruta, Motohiro Fukuda
  • Publication number: 20100331216
    Abstract: To provide a cell culture method capable of sustaining in-vivo functions for a long time by suppressing dedifferentiation. A cell culture method in accordance with the present invention is to culture cells in a multi-layered state in a minute partitioned space and to obtain a tissue structure having a function resembling an in-vivo function. When the cells are mammary gland epithelial cells, a hollow acinus-like structure can be formed. The minute partitioned space is particularly preferably a micro container in a cell culture container having a plurality of such micro containers on the surface.
    Type: Application
    Filed: February 5, 2009
    Publication date: December 30, 2010
    Applicants: National University Corporation Nagoya University, Kuraray Co., Ltd.
    Inventors: Masahiro Sokabe, Kishio Furuya, Go Tazaki, Hitoshi Tsuruta, Motohiro Fukuda
  • Patent number: 7364660
    Abstract: A polyamide having an equilibrium water absorption of not more than 10% is used as a main material. As a polyamide having an equilibrium water absorption of not.more than 10%, for example, a polyamide comprising a dicarboxylic acid component comprising 60-100 mol % of terephthalic acid and a diamine component comprising 60-100 mol % of 1,9-nonanediamine and/or 2-methyl-1,8-octanediamine is used. As a result, a porous membrane showing extremely small dimensional change even after a hot water treatment, and particularly useful as a medical separation membrane permitting an AC sterilization treatment and the like is obtained.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: April 29, 2008
    Assignees: Kuraray Co., Ltd., Kuraray Medical Inc.
    Inventors: Masato Takai, Yoichi Matsumoto, Kouji Sekiguchi, Tomoki Kakiuchi, Hitoshi Tsuruta, Takao Shimizu
  • Publication number: 20080075760
    Abstract: The moisturized nonwoven fabric of the invention contains 1% or more of a water-soluble component to a weight of a pre-moisturized nonwoven fabric and an increase ratio of an equilibrium moisture regain (equilibrium water content) is 0.5% or more as compared with an equilibrium moisture regain of the moisturized nonwoven fabric after the water-soluble component is removed. Therefore, this moisturized nonwoven fabric is excellent in use feel such as skin touch and wiping property and functionalities such as water absorption property and water retention property. Further, this moisturized nonwoven fabric is excellent in functionalities such as moisturizing liquid transferring capability and skin moisturizing effect.
    Type: Application
    Filed: February 27, 2007
    Publication date: March 27, 2008
    Applicants: KOCHI Prefecture, Kawano Paper Co., Ltd., Sanshoshigyo Co., Ltd.
    Inventors: Shinji Suzuki, Noriyasu Ike, Kiyotsugu Sawamura, Hiromu Matsumoto, Eri Tamura, Jun Morisawa, Hiroto Takiguchi, Masaaki Ariyoshi, Kenji Taniguchi, Hideaki Yoshida, Hitoshi Tsuruta, Masaaki Sasaoka, Akihiro Sasaki
  • Publication number: 20060111303
    Abstract: The present invention relates to a diketohydrazine derivative of formula (I) and a pharmaceutically acceptable salt thereof (the symbols in the formula have the same meaning as described in the specification). The compound of formula (I) has an inhibitory activity against cysteine protease, and it is useful for the treatment of inflammatory diseases, immune diseases, ischemic diseases, respiratory diseases, circulatory diseases, blood diseases, neuronal diseases, hepatic or biliary diseases, osseous or articular diseases, metabolic diseases, etc. And the compound has inhibitory activity against elastase and it is also useful for the treatment of COPD (chronic obstacle pulmonary diseases).
    Type: Application
    Filed: April 24, 2003
    Publication date: May 25, 2006
    Inventors: Akira Hatayama, Hitoshi Tsuruta, Yasuo Ochi, Haruo Imawaka, Kazuyuki Ohmoto
  • Publication number: 20050145561
    Abstract: A polyamide having an equilibrium water absorption of not more than 10% is used as a main material. As a polyamide having an equilibrium water absorption of not.more than 10%, for example, a polyamide comprising a dicarboxylic acid component comprising 60-100 mol % of terephthalic acid and a diamine component comprising 60-100 mol % of 1,9-nonanediamine and/or 2-methyl-1,8-octanediamine is used. As a result, a porous membrane showing extremely small dimensional change even after a hot water treatment, and particularly useful as a medical separation membrane permitting an AC sterilization treatment and the like is obtained.
    Type: Application
    Filed: July 10, 2003
    Publication date: July 7, 2005
    Inventors: Masato Takai, Yoichi Matsumoto, Kouji Sekiguchi, Tomoki Kakiuchi, Hitoshi Tsuruta, Takao Shimizu
  • Patent number: 6514409
    Abstract: A hollow fiber membrane made of an ethylene-vinyl alcohol polymer, comprises a dense layer existing in the inner surface and a porous layer existing in the layer other than the dense layer, wherein the hollow fiber membrane has a porosity of 60 to 90%, an overall mass transfer coefficient for myoglobin in a water-based system of not less than 0.003 cm/min., and a rejection rate for albumin in a bovine blood system of not less than 97%. The EVA hollow fiber membrane is useful for hemopurification membranes such as hemodialysis membranes, hemodiafiltration membranes, hemofiltration membranes and continuous hemofiltration membranes, and a process for producing the same.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: February 4, 2003
    Assignee: Kuraray Co., Ltd.
    Inventors: Tomoki Kakiuchi, Koji Sekiguchi, Takeshi Suehiro, Shuhei Nakaji, Yoichi Matsumoto, Masato Takai, Nozomu Sugo, Hitoshi Tsuruta
  • Publication number: 20010015335
    Abstract: A hollow fiber membrane made of an ethylene-vinyl alcohol polymer, comprising a dense layer existing in the inner surface and a porous layer existing in the layer other than the dense layer, wherein the hollow fiber membrane has a porosity of 60 to 90%, an overall mass transfer coefficient for myoglobin in a water-based system of not less than 0.003 cm/min., and a rejection rate for albumin in a bovine blood system of not less than 97%. The EVA hollow fiber membrane is useful for hemopurification membranes such as hemodialysis membranes, hemodiafiltration membranes, hemofiltration membranes and continuous hemofiltration membranes, and a process for producing the same.
    Type: Application
    Filed: January 10, 2001
    Publication date: August 23, 2001
    Applicant: Kuraray Co. Ltd.
    Inventors: Tomoki Kakiuchi, Koji Sekiguchi, Takeshi Suehiro, Shuhei Nakaji, Yoichi Matsumoto, Masato Takai, Nozomu Sugo, Hitoshi Tsuruta
  • Patent number: 5674696
    Abstract: There is disclosed an apparatus for the determination of a trace amount of an analyte substance or organism. A substrate solution is brought into contact with a small diameter tube which has captured, at least on its inner surface, a trace amount of an analyte substance or organism. The trace amount has the ability to change the pH of the substrate solution.
    Type: Grant
    Filed: October 24, 1994
    Date of Patent: October 7, 1997
    Assignee: Biosensor Laboratories Co., Ltd.
    Inventors: Michihiro Nakamura, Satomi Matsui, Keiko Oka, Hitoshi Tsuruta
  • Patent number: 5556760
    Abstract: A method for assaying an enzyme on a targeted solid body surface, including the steps of contacting an end opening of a thin tube with a targeted solid body surface to form a space between the targeted solid body surface and inner wall surface of the thin tube, supplying a substrate solution into the space to bring the substrate solution in contact with the targeted solid body surface, and determining a pH change of the substrate solution in the space by using a pH electrode; and an apparatus therefor.
    Type: Grant
    Filed: January 31, 1995
    Date of Patent: September 17, 1996
    Assignee: Biosensor Research Laboratories Co., Ltd.
    Inventors: Michihiro Nakamura, Satomi Matsui, Keiko Oka, Hitoshi Tsuruta, Yoshihiro Koori, Takuji Kato, Shigeji Ito
  • Patent number: 5066582
    Abstract: A method for measuring trace amounts of analyte substance(s), which utilize a pH electrode is disclosed. This method is by far simpler than conventional optical detecting systems. The apparatus for practicing the method is also disclosed. By the use of pH electrode, the apparatus is compact, inexpensive and easy to operate, and hence usable in small-size and medium-size hospitals or clinical laboratories and by patient's bedside.
    Type: Grant
    Filed: February 17, 1989
    Date of Patent: November 19, 1991
    Assignee: Kuraray Co., Ltd.
    Inventors: Hitoshi Tsuruta, Hideaki Yamada, Michihiro Nakamura