Patents by Inventor Kenji Watari
Kenji Watari 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).
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Publication number: 20230310614Abstract: An object of the present invention is to provide a vehicle and a composition for transplantation comprising retinal tissue and the vehicle, which are for the treatment of retinal degenerative diseases such as retinitis pigmentosa (RP) and are suitable for the subretinal transplantation of retinal tissue. The vehicle for transplantation of the present invention is a vehicle for transplantation for subretinally transplanting retinal tissue, the vehicle having a viscosity of 5 to 500 mPa·s at a shear rate of 2 (1/s) at 25° C., and comprising hyaluronic acid and a pharmaceutically acceptable aqueous liquid. The composition for transplantation of the present invention comprises transplant retinal tissue and the vehicle for transplantation of the present invention.Type: ApplicationFiled: September 10, 2021Publication date: October 5, 2023Applicants: Sumitomo Pharma Co., Ltd., RikenInventors: Michiko Mandai, Masayo Takahashi, Tatsuya Kamei, Keiichi Ono, Kenji Watari, Atsushi Kuwahara
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Publication number: 20220170098Abstract: The method disclosed herein is for evaluating the quality of a transplant neural retina by sampling a part or the whole of a cell aggregate containing a neural retina having an epithelial structure derived from a pluripotent stem cell as a sample for quality evaluation.Type: ApplicationFiled: March 13, 2020Publication date: June 2, 2022Applicants: Sumitomo Dainippon Pharma Co., Ltd., Riken, Sumitomo Chemical Company, LimitedInventors: Atsushi Kuwahara, Kenji Watari, Keizo Matsushita, Suguru Yamasaki, Michiko Mandai, Masayo Takahashi
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Publication number: 20200216796Abstract: An object of the present invention is to provide a method for preserving neural tissue for several hours to several weeks without freezing, a preservation solution therefor, a transport method for neural tissue in accordance with the method and using the preservation solution, and a composition for transplantation. The preservation method for neural tissue, comprising preserving neural tissue in a preservation solution having a potassium ion concentration of more than 0 mM and less than 115 mM at a preservation temperature of 8° C. to 30° C. The preservation solution having a potassium ion concentration of more than 0 mM and less than 115 mM, for preserving neural tissue derived from pluripotent stem cells at a preservation temperature of 8° C. to 30° C.Type: ApplicationFiled: July 20, 2018Publication date: July 9, 2020Applicants: Riken, Sumitomo Dainippon Pharma Co., Ltd.Inventors: Michiko Mandai, Masayo Takahashi, Atsushi Kuwahara, Kenji Watari, Keizo Matsushita
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Patent number: 8636904Abstract: A hollow fiber membrane module, a hollow fiber membrane module unit, and a water treatment method. The module or the module unit enable the efficient contact of microorganisms on the surface of a membrane with a gas. The module and the unit have excellent durability. The hollow fiber membrane module is formed so that the end parts of sheet-form hollow fiber membranes are formed in a substantially rectangular shape and the end face of the anchoring member on a side where the hollow fiber membranes open is formed in a substantially circular shape. The hollow fiber membrane module unit is formed in such a manner that a plurality of modules is disposed. The water treatment method is used to purify treated water with the microorganisms adhered onto the outer surfaces of the hollow fiber membranes by using the module or the unit.Type: GrantFiled: November 10, 2011Date of Patent: January 28, 2014Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Kenji Watari, Satoshi Takeda
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Patent number: 8241502Abstract: A hollow fiber membrane module, a hollow fiber membrane module unit using the hollow fiber membrane module, and a water treatment method using the module or the module unit enable the efficient contact of microorganisms on the surface of a membrane with a gas, the module and the unit having excellent durability. The hollow fiber membrane module is formed in such a manner that the end parts of sheet-form hollow fiber membranes are formed in a substantially rectangular shape and the end face of the anchoring member on a side where the hollow fiber membranes open is formed in a substantially circular shape. The hollow fiber membrane module unit is formed in such a manner that a plurality of modules is disposed. The water treatment method is used to purify treated water with the microorganisms adhered onto the outer surfaces of the hollow fiber membranes by using the module or the unit.Type: GrantFiled: November 23, 2010Date of Patent: August 14, 2012Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Kenji Watari, Satoshi Takeda
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Publication number: 20120125839Abstract: A hollow fiber membrane module, a hollow fiber membrane module unit, and a water treatment method. The module or the module unit enable the efficient contact of microorganisms on the surface of a membrane with a gas. The module and the unit have excellent durability. The hollow fiber membrane module is formed so that the end parts of sheet-form hollow fiber membranes are formed in a substantially rectangular shape and the end face of the anchoring member on a side where the hollow fiber membranes open is formed in a substantially circular shape. The hollow fiber membrane module unit is formed in such a manner that a plurality of modules is disposed. The water treatment method is used to purify treated water with the microorganisms adhered onto the outer surfaces of the hollow fiber membranes by using the module or the unit.Type: ApplicationFiled: November 10, 2011Publication date: May 24, 2012Applicant: MITSUBISHI RAYON CO., LTD.Inventors: Kenji WATARI, Satoshi Takeda
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Patent number: 8075773Abstract: A hollow fiber membrane module, a hollow fiber membrane module unit using the hollow fiber membrane module, and a water treatment method using the module or the module unit enable the efficient contact of microorganisms on the surface of a membrane with a gas, the module and the unit having excellent durability. The hollow fiber membrane module is formed in such a manner that the end parts of sheet-form hollow fiber membranes are formed in a substantially rectangular shape and the end face of the anchoring member on a side where the hollow fiber membranes open is formed in a substantially circular shape. The hollow fiber membrane module unit is formed in such a manner that a plurality of modules is disposed. The water treatment method is used to purify treated water with the microorganisms adhered onto the outer surfaces of the hollow fiber membranes by using the module or the unit.Type: GrantFiled: March 4, 2011Date of Patent: December 13, 2011Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Kenji Watari, Satoshi Takeda
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Publication number: 20110210070Abstract: A hollow fiber membrane module, a hollow fiber membrane module unit using the hollow fiber membrane module, and a water treatment method using the module or the module unit enable the efficient contact of microorganisms on the surface of a membrane with a gas, the module and the unit having excellent durability. The hollow fiber membrane module is formed in such a manner that the end parts of sheet-form hollow fiber membranes are formed in a substantially rectangular shape and the end face of the anchoring member on a side where the hollow fiber membranes open is formed in a substantially circular shape. The hollow fiber membrane module unit is formed in such a manner that a plurality of modules is disposed. The water treatment method is used to purify treated water with the microorganisms adhered onto the outer surfaces of the hollow fiber membranes by using the module or the unit.Type: ApplicationFiled: March 4, 2011Publication date: September 1, 2011Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Kenji WATARI, Satoshi Takeda
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Publication number: 20110120949Abstract: A hollow fiber membrane module, a hollow fiber membrane module unit using the hollow fiber membrane module, and a water treatment method using the module or the module unit enable the efficient contact of microorganisms on the surface of a membrane with a gas, the module and the unit having excellent durability. The hollow fiber membrane module is formed in such a manner that the end parts of sheet-form hollow fiber membranes are formed in a substantially rectangular shape and the end face of the anchoring member on a side where the hollow fiber membranes open is formed in a substantially circular shape. The hollow fiber membrane module unit is formed in such a manner that a plurality of modules is disposed. The water treatment method is used to purify treated water with the microorganisms adhered onto the outer surfaces of the hollow fiber membranes by using the module or the unit.Type: ApplicationFiled: November 23, 2010Publication date: May 26, 2011Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Kenji WATARI, Satoshi Takeda
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Patent number: 7922902Abstract: A hollow fiber membrane module, a hollow fiber membrane module unit using the hollow fiber membrane module, and a water treatment method using the module or the module unit enable the efficient contact of microorganisms on the surface of a membrane with a gas, the module and the unit having excellent durability. The hollow fiber membrane module is formed in such a manner that the end parts of sheet-form hollow fiber membranes are formed in a substantially rectangular shape and the end face of the anchoring member on a side where the hollow fiber membranes open is formed in a substantially circular shape. The hollow fiber membrane module unit is formed in such a manner that a plurality of modules is disposed. The water treatment method is used to purify treated water with the microorganisms adhered onto the outer surfaces of the hollow fiber membranes by using the module or the unit.Type: GrantFiled: October 28, 2004Date of Patent: April 12, 2011Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Kenji Watari, Satoshi Takeda
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Patent number: 7316754Abstract: An object of the present invention is to provide a production apparatus for a hollow fiber membrane module without a risk of deteriorating characteristics of the hollow fiber membranes to be used, with the module case and the hollow fiber membranes bonded and fixed with a potting resin in a highly fluid-tight or airtight manner, and a production method thereof. A centrifugal type production apparatus (1) for the hollow fiber membrane module, for bonding and fixing at least one end part of the hollow fiber membrane stored in the module case and the module case with each other with the potting resin by utilizing a centrifugal force. The centrifugal force is applied by driving a centrifugal machine (11) while supporting an end part potting working part (3) of the hollow fiber membrane module (2) by a fixing jig (4).Type: GrantFiled: February 24, 2003Date of Patent: January 8, 2008Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Masaru Ide, Yoshihito Nakahara, Satoshi Suzuki, Kenji Watari, Hiroshi Tasaka
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Publication number: 20070131605Abstract: A hollow fiber membrane module, a hollow fiber membrane module unit using the hollow fiber membrane module, and a water treatment method using the module or the module unit enable the efficient contact of microorganisms on the surface of a membrane with a gas, the module and the unit having excellent durability. The hollow fiber membrane module is formed in such a manner that the end parts of sheet-form hollow fiber membranes are formed in a substantially rectangular shape and the end face of the anchoring member on a side where the hollow fiber membranes open is formed in a substantially circular shape. The hollow fiber membrane module unit is formed in such a manner that a plurality of modules is disposed. The water treatment method is used to purify treated water with the microorganisms adhered onto the outer surfaces of the hollow fiber membranes by using the module or the unit.Type: ApplicationFiled: October 28, 2004Publication date: June 14, 2007Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Kenji Watari, Satoshi Takeda
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Publication number: 20050103423Abstract: An object of the present invention is to provide a production apparatus for a hollow fiber membrane module without a risk of deteriorating characteristics of the hollow fiber membranes to be used, with the module case and the hollow fiber membranes bonded and fixed with a potting resin in a highly fluid-tight or airtight manner, and a production method thereof. The object is a centrifugal type production apparatus (1) for the hollow fiber membrane module, for bonding and fixing at least one end part of the hollow fiber membrane stored in the module case and the module case with each other with the potting resin by utilizing a centrifugal force. The centrifugal force is applied by driving a centrifugal machine (11) while supporting an end part potting working part (3) of the hollow fiber membrane module (2) by a fixing jig (4).Type: ApplicationFiled: February 24, 2003Publication date: May 19, 2005Applicant: Mitsubishi Rayon Co., Ltd. of 6-41, Konan 1-chome, Minato-kuInventors: Masaru Ide, Yoshihito Nakahara, Satoshi Suzuki, Kenji Watari, Hiroshi Tasaka
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Patent number: 6860922Abstract: The present invention provides a gas-permeable hollow fiber membrane having an inner diameter of 50 to 500 ?m and a membrane thickness of 10 to 150 ?m, which is preferably a composite hollow fiber membrane having a three-layer structure consisting of a nonporous layer having porous layers disposed on both sides thereof. Dissolved gases present in an ink can be removed by passing the ink through the bores of hollow fibers comprising such a hollow fiber membrane, and evacuating the outer surface side of the hollow fibers. This method makes it possible not only to degas inks with a slight pressure loss, but also to degas inks stably even if pressure changes occur during degassing.Type: GrantFiled: June 24, 2002Date of Patent: March 1, 2005Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Kenji Watari, Satoshi Takeda, Masumi Kobayashi, Makoto Uchida, Masamoto Uenishi, Noriaki Fukushima, Seiji Hayashi
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Patent number: 6858063Abstract: The present invention provides a gas-permeable hollow fiber membrane having an inner diameter of 50 to 500 ?m and a membrane thickness of 10 to 150 ?m, which is preferably a composite hollow fiber membrane having a three-layer structure consisting of a nonporous layer having porous layers disposed on both sides thereof. Dissolved gases present in an ink can be removed by passing the ink through the bores of hollow fibers comprising such a hollow fiber membrane, and evacuating the outer surface side of the hollow fibers. This method makes it possible not only to degas inks with a slight pressure loss, but also to degas inks stably even if pressure changes occur during degassing.Type: GrantFiled: June 24, 2002Date of Patent: February 22, 2005Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Kenji Watari, Satoshi Takeda, Masumi Kobayashi, Makoto Uchida, Masamoto Uenishi, Noriaki Fukushima, Seiji Hayashi
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Patent number: 6824261Abstract: The present invention provides a gas-permeable hollow fiber membrane having an inner diameter of 50 to 500 &mgr;m and a membrane thickness of 10 to 150 &mgr;m, which is, preferably a composite hollow fiber membrane having a three-layer structure consisting of a nonporous layer having porous layers disposed on both sides thereof. Dissolved gases present in an ink can be removed by passing the ink through the bores of hollow fibers comprising such a hollow fiber membrane, and evacuating the outer surface side of the hollow fibers. This method makes it possible not only to degas inks with a slight pressure loss, but also to degas inks stably even if pressure changes occur during degassing.Type: GrantFiled: June 24, 2002Date of Patent: November 30, 2004Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Kenji Watari, Satoshi Takeda, Masumi Kobayashi, Makoto Uchida, Masamoto Uenishi, Noriaki Fukushima, Seiji Hayashi
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Patent number: 6648945Abstract: A hollow fiber membrane module and potting material can be used for chemical deaeration in a semiconductor production process, in printers, in a liquid crystal sealing process or in a chemical production process. A hollow fiber membrane module 1 includes, as potting material 2, an epoxy resin cured product in which the weight change per unit surface area of a potting material test piece after immersing the test piece in a chemical for 6 months at room temperature is within the range of −20 to +20 mg/cm2, and as housing 4, a polyolefin in which the weight change per unit surface area of a test piece after immersing the test piece in a chemical for 6 months at room temperature is within the range of −20 to +20 mg/cm2, and the total metal content is 300 ppm or less. The module has a long service life when used for chemical treatment without leakage.Type: GrantFiled: October 2, 2001Date of Patent: November 18, 2003Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Satoshi Takeda, Osami Kato, Kenji Watari, Kenji Niikawa, Masamoto Uenishi, Hiroshi Tasaka
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Publication number: 20020158000Abstract: The present invention provides a gas-permeable hollow fiber membrane having an inner diameter of 50 to 500 &mgr;m and a membrane thickness of 10 to 150 &mgr;m, which is preferably a composite hollow fiber membrane having a three-layer structure consisting of a nonporous layer having porous layers disposed on both sides thereof. Dissolved gases present in an ink can be removed by passing the ink through the bores of hollow fibers comprising such a hollow fiber membrane, and evacuating the outer surface side of the hollow fibers. This method makes it possible not only to degas inks with a slight pressure loss, but also to degas inks stably even if pressure changes occur during degassing.Type: ApplicationFiled: June 24, 2002Publication date: October 31, 2002Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Kenji Watari, Satoshi Takeda, Masumi Kobayashi, Makoto Uchida, Masamoto Uenishi, Noriaki Fukushima, Seiji Hayashi
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Publication number: 20020153318Abstract: The present invention provides a gas-permeable hollow fiber membrane having an inner diameter of 50 to 500 &mgr;m and a membrane thickness of 10 to 150 &mgr;m, which is, preferably a composite hollow fiber membrane having a three-layer structure consisting of a nonporous layer having porous layers disposed on both sides thereof. Dissolved gases present in an ink can be removed by passing the ink through the bores of hollow fibers comprising such a hollow fiber membrane, and evacuating the outer surface side of the hollow fibers. This method makes it possible not only to degas inks with a slight pressure loss, but also to degas inks stably even if pressure changes occur during degassing.Type: ApplicationFiled: June 24, 2002Publication date: October 24, 2002Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Kenji Watari, Satoshi Takeda, Masumi Kobayashi, Makoto Uchida, Masamoto Uenishi, Noriaki Fukushima, Seiji Hayashi
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Publication number: 20020148775Abstract: The present invention provides a gas-permeable hollow fiber membrane having an inner diameter of 50 to 500 &mgr;m and a membrane thickness of 10 to 150 &mgr;m, which is preferably a composite hollow fiber membrane having a three-layer structure consisting of a nonporous layer having porous layers disposed on both sides thereof. Dissolved gases present in an ink can be removed by passing the ink through the bores of hollow fibers comprising such a hollow fiber membrane, and evacuating the outer surface side of the hollow fibers. This method makes it possible not only to degas inks with a slight pressure loss, but also to degas inks stably even if pressure changes occur during degassing.Type: ApplicationFiled: June 24, 2002Publication date: October 17, 2002Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Kenji Watari, Satoshi Takeda, Masumi Kobayashi, Makoto Uchida, Masamoto Uenishi, Noriaki Fukushima, Seiji Hayashi