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: 10836996Abstract: 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: GrantFiled: January 29, 2016Date of Patent: November 17, 2020Assignees: Corning Incorporated, Public University Corporation Yokohama City UniversityInventors: Yoko Itchoda, Go Tazaki, Motohiro Fukuda, Hitoshi Tsuruta, Hideki Taniguchi
-
Patent number: 9428721Abstract: 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: GrantFiled: February 5, 2009Date of Patent: August 30, 2016Assignees: 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: 20160160175Abstract: 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: ApplicationFiled: January 29, 2016Publication date: June 9, 2016Applicants: KURARAY CO., LTD., Public University Corp. Yokohama City UniversityInventors: Yoko ITCHODA, Go Tazaki, Motohiro Fukuda, Hitoshi Tsuruta, Hideki Taniguchi
-
Patent number: 9290735Abstract: 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: GrantFiled: February 5, 2009Date of Patent: March 22, 2016Assignees: National University Corporation Nagoya University, KURARAY Co., Ltd.Inventors: Masahiro Sokabe, Kishio Furuya, Go Tazaki, Hitoshi Tsuruta, Motohiro Fukuda
-
Publication number: 20110217725Abstract: 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: ApplicationFiled: October 23, 2009Publication date: September 8, 2011Applicants: Kuraray Co., Ltd., Public University Corp. Yokohama City UniversityInventors: Yoko Itchoda, Go Tazaki, Motohiro Fukuda, Hitoshi Tsuruta, Hideki Taniguchi
-
Publication number: 20110207215Abstract: 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: ApplicationFiled: October 23, 2009Publication date: August 25, 2011Applicants: KURARAY CO., LTD., PUBLIC UNIVERSITY CORP. YOKOHAMA CITY UNIVERSITYInventors: Yoko Itchoda, Go Tazaki, Motohiro Fukuda, Hitoshi Tsuruta, Hideki Taniguchi
-
Publication number: 20110045500Abstract: 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: ApplicationFiled: February 5, 2009Publication date: February 24, 2011Applicants: 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: 20100331216Abstract: 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: ApplicationFiled: February 5, 2009Publication date: December 30, 2010Applicants: National University Corporation Nagoya University, Kuraray Co., Ltd.Inventors: Masahiro Sokabe, Kishio Furuya, Go Tazaki, Hitoshi Tsuruta, Motohiro Fukuda
-
Patent number: 7364660Abstract: 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: GrantFiled: July 10, 2003Date of Patent: April 29, 2008Assignees: Kuraray Co., Ltd., Kuraray Medical Inc.Inventors: Masato Takai, Yoichi Matsumoto, Kouji Sekiguchi, Tomoki Kakiuchi, Hitoshi Tsuruta, Takao Shimizu
-
Publication number: 20080075760Abstract: 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: ApplicationFiled: February 27, 2007Publication date: March 27, 2008Applicants: 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: 20060111303Abstract: 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: ApplicationFiled: April 24, 2003Publication date: May 25, 2006Inventors: Akira Hatayama, Hitoshi Tsuruta, Yasuo Ochi, Haruo Imawaka, Kazuyuki Ohmoto
-
Publication number: 20050145561Abstract: 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: ApplicationFiled: July 10, 2003Publication date: July 7, 2005Inventors: Masato Takai, Yoichi Matsumoto, Kouji Sekiguchi, Tomoki Kakiuchi, Hitoshi Tsuruta, Takao Shimizu
-
Patent number: 6514409Abstract: 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: GrantFiled: January 10, 2001Date of Patent: February 4, 2003Assignee: Kuraray Co., Ltd.Inventors: Tomoki Kakiuchi, Koji Sekiguchi, Takeshi Suehiro, Shuhei Nakaji, Yoichi Matsumoto, Masato Takai, Nozomu Sugo, Hitoshi Tsuruta
-
Publication number: 20010015335Abstract: 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: ApplicationFiled: January 10, 2001Publication date: August 23, 2001Applicant: Kuraray Co. Ltd.Inventors: Tomoki Kakiuchi, Koji Sekiguchi, Takeshi Suehiro, Shuhei Nakaji, Yoichi Matsumoto, Masato Takai, Nozomu Sugo, Hitoshi Tsuruta
-
Patent number: 5674696Abstract: 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: GrantFiled: October 24, 1994Date of Patent: October 7, 1997Assignee: Biosensor Laboratories Co., Ltd.Inventors: Michihiro Nakamura, Satomi Matsui, Keiko Oka, Hitoshi Tsuruta
-
Patent number: 5556760Abstract: 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: GrantFiled: January 31, 1995Date of Patent: September 17, 1996Assignee: Biosensor Research Laboratories Co., Ltd.Inventors: Michihiro Nakamura, Satomi Matsui, Keiko Oka, Hitoshi Tsuruta, Yoshihiro Koori, Takuji Kato, Shigeji Ito
-
Patent number: 5066582Abstract: 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: GrantFiled: February 17, 1989Date of Patent: November 19, 1991Assignee: Kuraray Co., Ltd.Inventors: Hitoshi Tsuruta, Hideaki Yamada, Michihiro Nakamura