Patents by Inventor Taro Toyota
Taro Toyota 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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Patent number: 11845835Abstract: Objects of the present invention are to provide a novel functional silicon-containing polymer compound to which a property capable of controlling fluidity by a light stimulus is imparted and to provide a method capable of efficiently synthesizing such a polymer compound while maintaining molecular stability. Provided is a polymer compound characterized by having a backbone structure consisting of a silicon-containing polymer, and having N number of partial structures represented by the following formula (1) at the end or side chain of the backbone structure, N being 2 or more.Type: GrantFiled: May 13, 2019Date of Patent: December 19, 2023Assignee: The University of TokyoInventors: Satoshi Honda, Taro Toyota
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Publication number: 20210238364Abstract: Objects of the present invention are to provide a novel functional silicon-containing polymer compound to which a property capable of controlling fluidity by a light stimulus is imparted and to provide a method capable of efficiently synthesizing such a polymer compound while maintaining molecular stability. Provided is a polymer compound characterized by having a backbone structure consisting of a silicon-containing polymer, and having N number of partial structures represented by the following formula (1) at the end or side chain of the backbone structure, N being 2 or more.Type: ApplicationFiled: May 13, 2019Publication date: August 5, 2021Inventors: Satoshi Honda, Taro Toyota
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Patent number: 10022459Abstract: A medical tissue-marker which enables the identification of a location even from the outside of an organ, can remain topical over a long period, and enables the easy identification of a marked location within the whole organ; also a manufacturing method for the medical tissue-marker. The medical tissue-marker includes a vesicle formed by the synthesis of a phospholipid and a near infrared fluorescent dye, and an emulsion formed by the synthesis of the phospholipid and an X-ray contrast medium, and has agglomerated clusters wherein the vesicle and the emulsion are contained in a hydrophilic solvent and a plurality of capsules are formed by use of an emulsifier.Type: GrantFiled: May 31, 2012Date of Patent: July 17, 2018Assignee: NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITYInventors: Hideki Hayashi, Hirosuke Hatayama, Masanori Fujinami, Taro Toyota
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Patent number: 9957392Abstract: Disclosed is a near-infrared fluorescent imaging agent comprising an indocyanine-based fluorescent dye and a liposome. The near-infrared fluorescent imaging agent of the present invention demonstrates high fluorescence intensity and a long anchoring time in sentinel lymph nodes, thereby making it useful for detecting sentinel lymph nodes in sentinel lymph node navigation surgery. Also disclosed is an indocyanine green derivative that is particularly suitable for use in the near-infrared fluorescent imaging agent of the present invention.Type: GrantFiled: January 29, 2016Date of Patent: May 1, 2018Assignee: Eisai R&D Management Co., Ltd.Inventors: Hideki Hayashi, Masanori Fujinami, Taro Toyota, Yutaka Tamura, Akira Aoki, Yutaka Muraki, Kazuki Onoue
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Patent number: 9872833Abstract: An object of the present invention is to provide a drug delivery system capable of sustainedly releasing a drug noninvasively at any given point in time. The present invention relates to a liposome complex comprising a liposome membrane-constituting substance bonded to a light-absorbing compound having an absorption wavelength in the near-infrared region, selected from the group consisting of indocyanine green dyes, phthalocyanine dyes, squarylium dyes, croconium dyes, and diimmonium dyes.Type: GrantFiled: October 3, 2012Date of Patent: January 23, 2018Assignees: National University Corporation Tottori University, National University Corporation Chiba UniversityInventors: Yoshiharu Okamoto, Yutaka Tamura, Akiko Suganami, Hideki Hayashi, Tomoyuki Madono, Hisahiro Matsubara, Taro Toyota
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Publication number: 20160222211Abstract: Disclosed is a near-infrared fluorescent imaging agent comprising an indocyanine-based fluorescent dye and a liposome. The near-infrared fluorescent imaging agent of the present invention demonstrates high fluorescence intensity and a long anchoring time in sentinel lymph nodes, thereby making it useful for detecting sentinel lymph nodes in sentinel lymph node navigation surgery. Also disclosed is an indocyanine green derivative that is particularly suitable for use in the near-infrared fluorescent imaging agent of the present invention.Type: ApplicationFiled: January 29, 2016Publication date: August 4, 2016Inventors: Hideki Hayashi, Masanori Fujinami, Taro Toyota, Yutaka Tamura, Akira Aoki, Yutaka Muraki, Kazuki Onoue
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Patent number: 9302018Abstract: Disclosed is a near-infrared fluorescent imaging agent comprising an indocyanine-based fluorescent dye and a liposome. The near-infrared fluorescent imaging agent of the present invention demonstrates high fluorescence intensity and a long anchoring time in sentinel lymph nodes, thereby making it useful for detecting sentinel lymph nodes in sentinel lymph node navigation surgery. Also disclosed is an indocyanine green derivative that is particularly suitable for use in the near-infrared fluorescent imaging agent of the present invention.Type: GrantFiled: May 31, 2011Date of Patent: April 5, 2016Assignee: Eisai R&D Management Co., Ltd.Inventors: Hideki Hayashi, Masanori Fujinami, Taro Toyota, Yutaka Tamura, Akira Aoki, Yutaka Muraki, Kazuki Onoue
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Publication number: 20140369935Abstract: An object of the present invention is to provide a drug delivery system capable of sustainedly releasing a drug noninvasively at any given point in time. The present invention relates to a liposome complex comprising a liposome membrane-constituting substance bonded to a light-absorbing compound having an absorption wavelength in the near-infrared region, selected from the group consisting of indocyanine green dyes, phthalocyanine dyes, squarylium dyes, croconium dyes, and diimmonium dyes.Type: ApplicationFiled: October 3, 2012Publication date: December 18, 2014Inventors: Yoshiharu Okamoto, Yutaka Tamura, Akiko Suganami, Hideki Hayashi, Tomoyuki Madono, Hisahiro Matsubara, Taro Toyota
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Publication number: 20140219924Abstract: The present invention is to provide a medical tissue-marker which enables the identification of a location even from the outside of an organ, can remain topical over a long period, and enables the easy identification of a marked location within the whole organ; also to provide a manufacturing method for the medical tissue-marker. The medical tissue-marker as in the present invention includes a vesicle formed by the synthesis of a phospholipid and a near infrared fluorescent dye, and an emulsion formed by the synthesis of the phospholipid and an X-ray contrast medium, and has agglomerated clusters wherein the vesicle and the emulsion are contained in a hydrophilic solvent and a plurality of capsules are formed by means of an emulsifier.Type: ApplicationFiled: May 31, 2012Publication date: August 7, 2014Inventors: Hideki Hayashi, Hiroya Hatakeyama, Masanori Fujinami, Taro Toyota
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Publication number: 20130129631Abstract: Disclosed is a near-infrared fluorescent imaging agent comprising an indocyanine-based fluorescent dye and a liposome. The near-infrared fluorescent imaging agent of the present invention demonstrates high fluorescence intensity and a long anchoring time in sentinel lymph nodes, thereby making it useful for detecting sentinel lymph nodes in sentinel lymph node navigation surgery. Also disclosed is an indocyanine green derivative that is particularly suitable for use in the near-infrared fluorescent imaging agent of the present invention.Type: ApplicationFiled: May 31, 2011Publication date: May 23, 2013Applicant: NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITYInventors: Hideki Hayashi, Masanori Fujinami, Taro Toyota, Yutaka Tamura, Akira Aoki, Yutaka Muraki, Kazuki Onoue