Patents by Inventor Keiichiro Tsubaki

Keiichiro Tsubaki 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).

  • Publication number: 20240141314
    Abstract: The information processing device includes: a cultivation information acquisition unit configured to acquire cultivation information of a cell; and a recommended condition setting unit configured to set a recommended condition for detaching the cell from a to be-processed vessel in which the cell is cultured, the cultivation information including information about the to-be-processed vessel, the recommended condition being a condition for detaching the cell by applying vibration to the to-be-processed vessel, the recommended condition setting unit being configured to set the recommended condition based on the cultivation information, with use of information concerning an association relationship between information about a cultivation condition and information about a detachment condition, the information about the cultivation condition including information about a culture vessel, the information about the detachment condition including information about a condition for applying vibration to the culture vess
    Type: Application
    Filed: October 17, 2023
    Publication date: May 2, 2024
    Inventors: KENJIRO TAKEMURA, YUTA KURASHINA, CHIKAHIRO IMASHIRO, KAZUNORI NOGUCHI, MASASHI HIROSE, KATSUHISA YAMAZAKI, KEIICHIRO TSUBAKI, SUGURU WATANABE, AKIRA SUGIYAMA, KENICHI KAKU, RYUICHI OTSU, YUKARI NAKASHOJI, TAKAAKI FURUI, TATSUO FURUTA, HITOMI TOKUTAKE
  • Publication number: 20240141281
    Abstract: The information processing device includes: a cultivation information acquisition unit configured to acquire cultivation information of a cell; and a recommended condition generation unit configured to generate a recommended condition for detaching the cell from a to-be-processed vessel in which the cell is cultured, the cultivation information including information about the to-be-processed vessel, the recommended condition being a condition for detaching the cell by applying vibration to the to-be-processed vessel, the recommended condition generation unit being configured to generate the recommended condition based on the cultivation information, with use of a learned model, the learned model being learned with use of information about a cultivation condition and information about a detachment condition, the information about the cultivation condition including information about a culture vessel, the information about the detachment condition including information about a condition for applying vibration t
    Type: Application
    Filed: October 23, 2023
    Publication date: May 2, 2024
    Inventors: KENJIRO TAKEMURA, YUTA KURASHINA, CHIKAHIRO IMASHIRO, KAZUNORI NOGUCHI, KATSUHISA YAMAZAKI, MASASHI HIROSE, KEIICHIRO TSUBAKI, SUGURU WATANABE, AKIRA SUGIYAMA, KENICHI KAKU, TAKAAKI FURUI, TATSUO FURUTA, HITOMI TOKUTAKE, RYUICHI OTSU, YUKARI NAKASHOJI
  • Publication number: 20230295555
    Abstract: Provided are a method of recovering cells cultured on a substrate, the method including: a step 1 of adding a cell detachment solution containing a metal ion chelating agent to the substrate having the cells adhering thereto to bring the cells into contact with the cell detachment solution; a step 2 of applying ultrasonic vibration to the substrate and the cells to detach the cells from the substrate; and a step 3 of obtaining the cells singulated from the cells detached in the step 2, and a cell recovery apparatus capable of implementing the method of recovering cells.
    Type: Application
    Filed: February 24, 2023
    Publication date: September 21, 2023
    Inventors: FUMIO YAMAUCHI, KENGO KANAZAKI, SHINSUKE MOCHIZUKI, KEIICHIRO TSUBAKI
  • Patent number: 11086242
    Abstract: The toner has a toner particle that contains a binder resin, wherein the binder resin contains a styrene-acrylic resin that has a structure derived from a crosslinking agent, the binder resin includes tetrahydrofuran-insoluble matter in an amount of from 5 mass % to 60 mass % of the binder resin, and the crosslinking agent contains a polymeric compound provided by an addition reaction at least between a particular multifunctional (meth)acrylate compound and a particular polyvalent mercapto compound.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: August 10, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Naoya Isono, Keiichiro Tsubaki, Yasuaki Murai
  • Patent number: 10948839
    Abstract: The toner contains a toner particle that has a binder resin, wherein an amount of a tetrahydrofuran THF-insoluble matter A collected when a THF dispersion of the binder resin is passed through a first filter having an average pore diameter of 8 ?m, is not more than 10 mass % of the binder resin, and an amount of a THF-insoluble matter B collected when the THF dispersion that has been passed through the first filter is passed through a second filter having an average pore diameter of 0.8 ?m, is from 5 mass % to 50 mass % of the binder resin.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: March 16, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Keiichiro Tsubaki, Naoya Isono, Yasuaki Murai
  • Publication number: 20210055286
    Abstract: The present invention provides a particle that shows a small non-specific adsorption, has a reactive functional group for chemically bonding a ligand thereto, and is suitable for an agglutination method. The particle includes a polymer having a unit having a side chain A and a unit having a side chain B, wherein the side chain A has a carboxyl group at a terminal thereof, and has an ester bond and an amide bond in a molecular structure thereof; the side chain B has an alkyl group at a terminal thereof; and a zeta potential at the time when the particles are dispersed in water is minus 40 mV or higher and minus 5 mV or lower.
    Type: Application
    Filed: August 6, 2020
    Publication date: February 25, 2021
    Inventors: Masao Suzuki, Kazumichi Nakahama, Sakae Suda, Keiichiro Tsubaki, Kengo Kanazaki, Ryo Natori, Fumio Yamauchi
  • Publication number: 20210055292
    Abstract: The present disclosure provides a particle showing a small non-specific adsorption, having a reactive functional group for chemically bonding a ligand thereto, and being suitable for an agglutination method; a particle for the agglutination method having a ligand chemically bonded to the particle; a reagent, a kit and a method for detecting a target substance, each for in vitro diagnosis, each of which contains the particle. The particle includes a polymer having a unit having a linker A in a side chain, wherein when both terminals of the linker A are represented by X1 and X2, the linker A has a reactive functional group for chemically bonding a ligand thereto in one of X1 and X2; one of X1 and X2 includes an ester structure; and a sum of bonds between atoms linearly connecting X1 and X2 is 18 to 24 and the X1 and X2 contain CH2 or CH.
    Type: Application
    Filed: August 6, 2020
    Publication date: February 25, 2021
    Inventors: Sakae Suda, Masao Suzuki, Kazumichi Nakahama, Keiichiro Tsubaki, Kengo Kanazaki, Ryo Natori, Fumio Yamauchi
  • Publication number: 20200133152
    Abstract: The toner contains a toner particle that has a binder resin, wherein an amount of a tetrahydrofuran THF-insoluble matter A collected when a THF dispersion of the binder resin is passed through a first filter having an average pore diameter of 8 ?m, is not more than 10 mass % of the binder resin, and an amount of a THF-insoluble matter B collected when the THF dispersion that has been passed through the first filter is passed through a second filter having an average pore diameter of 0.8 ?m, is from 5 mass % to 50 mass % of the binder resin.
    Type: Application
    Filed: October 24, 2019
    Publication date: April 30, 2020
    Inventors: Keiichiro Tsubaki, Naoya Isono, Yasuaki Murai
  • Publication number: 20200133151
    Abstract: The toner has a toner particle that contains a binder resin, wherein the binder resin contains a styrene-acrylic resin that has a structure derived from a crosslinking agent, the binder resin includes tetrahydrofuran-insoluble matter in an amount of from 5 mass % to 60 mass % of the binder resin, and the crosslinking agent contains a polymeric compound provided by an addition reaction at least between a particular multifunctional (meth)acrylate compound and a particular polyvalent mercapto compound.
    Type: Application
    Filed: October 24, 2019
    Publication date: April 30, 2020
    Inventors: Naoya Isono, Keiichiro Tsubaki, Yasuaki Murai
  • Patent number: 10216107
    Abstract: Provided is a toner having a toner particle that contains a binder resin and a wax, wherein the solubility parameter SP of the binder resin is at least 9.4 and not more than 10.0; the binder resin contains a resin having a structure represented by the following formula (1) in the terminal position on a main chain of the resin, *—CO—R??formula (1) (in formula (1), R represents a phenyl group or a derivative thereof, or —COOR1, R1 represents an alkyl group having 1 to 4 carbons, and * represents a bond to the main chain of the resin); the solubility parameter SW of the wax is at least 8.1 and not more than 9.0; and SP and SW satisfy formula (2), |SP?SW|>0.5??formula (2).
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: February 26, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Keiichiro Tsubaki, Naoya Isono, Yasuaki Murai, Masao Suzuki
  • Publication number: 20180196367
    Abstract: Provided is a toner having a toner particle that contains a binder resin and a wax, wherein the solubility parameter SP of the binder resin is at least 9.4 and not more than 10.0; the binder resin contains a resin having a structure represented by the following formula (1) in the terminal position on a main chain of the resin, *—CO—R??formula (1) (in formula (1), R represents a phenyl group or a derivative thereof, or —COOR1, R1 represents an alkyl group having 1 to 4 carbons, and * represents a bond to the main chain of the resin); the solubility parameter SW of the wax is at least 8.1 and not more than 9.0; and SP and SW satisfy formula (2), |SP?SW|>0.5??formula (2).
    Type: Application
    Filed: December 28, 2017
    Publication date: July 12, 2018
    Inventors: Keiichiro Tsubaki, Naoya Isono, Yasuaki Murai, Masao Suzuki
  • Publication number: 20160282612
    Abstract: Provided is an optical element including a substrate and a light-shielding film in a part of the substrate. The light-shielding film contains a resin and a colorant. The resin is a cured epoxy resin having a first aryl unit represented by Formula (1) below in a side chain or a terminal. [In the formula, Ar represents a monocyclic unsubstituted aryl group, a polycyclic unsubstituted aryl group, a monocyclic substituted aryl group, or a polycyclic substituted aryl group.
    Type: Application
    Filed: March 1, 2016
    Publication date: September 29, 2016
    Inventors: Ryo Ogawa, Keiichiro Tsubaki, Tetsuo Hino, Reiko Kubota
  • Patent number: 9388264
    Abstract: A method for producing a resin composition, comprising the step of: subjecting a radical copolymerization of a first radical polymerizable monomer which is free from any crystalline molecular chain and a second radical polymerizable monomer having a crystalline molecular chain, in the presence of a radical polymerization initiator, wherein the second radical polymerizable monomer is the following compound, (wherein R1 denotes a hydrogen atom or a methyl group, and R2 denotes an alkyl group having at least 17 carbon atoms) the first radical polymerizable monomer has a particular reactivity ratio.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: July 12, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazumichi Nakahama, Keiichiro Tsubaki, Takayuki Hiratani, Akira Kuriyama, Taku Shimoda
  • Publication number: 20140323673
    Abstract: A method for producing a resin composition, comprising the step of: subjecting a radical copolymerization of a first radical polymerizable monomer which is free from any crystalline molecular chain and a second radical polymerizable monomer having a crystalline molecular chain, in the presence of a radical polymerization initiator, wherein the second radical polymerizable monomer is the following compound, (wherein R1 denotes a hydrogen atom or a methyl group, and R2 denotes an alkyl group having at least 17 carbon atoms) the first radical polymerizable monomer has a particular reactivity ratio.
    Type: Application
    Filed: April 24, 2014
    Publication date: October 30, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kazumichi Nakahama, Keiichiro Tsubaki, Takayuki Hiratani, Akira Kuriyama, Taku Shimoda
  • Publication number: 20140323659
    Abstract: A method for producing a resin composition, comprising the step of: subjecting a radical copolymerization of a first radical polymerizable monomer which is free from any crystalline molecular chain, and a second radical polymerizable monomer having a crystalline molecular chain, in the presence of a radical polymerization initiator, wherein the second radical polymerizable monomer is the following compound, and (wherein R1 denotes a hydrogen atom or a methyl group, and R2 denotes an alkyl group having at least 17 carbon atoms) the first radical polymerizable monomer has a particular reactivity ratio.
    Type: Application
    Filed: April 24, 2014
    Publication date: October 30, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Taku Shimoda, Keiichiro Tsubaki, Takayuki Hiratani, Akira Kuriyama, Kazumichi Nakahama
  • Publication number: 20130134368
    Abstract: The invention provides an organic-inorganic composite material having a sufficient transparency and a low coefficient of linear expansion, an optical element using the same and a production process thereof. The organic-inorganic composite material has at least one polymer compound and at least one inorganic oxide having a three-dimensional network structure, wherein the polymer compound has a three-dimensional network structure and is covalently bonded to the inorganic oxide, and the haze value of the organic-inorganic composite material in terms of a thickness of 5 mm is 10% or less.
    Type: Application
    Filed: December 10, 2010
    Publication date: May 30, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Keiichiro Tsubaki
  • Patent number: 8450393
    Abstract: The invention provides an ink composition, which is improved in dispersibility and fastness properties and is excellent in dispersion stability and re-solubility owing to dispersed particles in which a coloring material is included by a crosslinked hydrophobic block segment in a dispersing polymer. The ink composition contains an amphiphilic block polymer compound, in which a coloring material is included, and a medium, wherein the amphiphilic block polymer compound, in which the coloring material is included, forms a dispersed particle having the hydrophobic block segment as an internal core part, and the hydrophobic block segment is crosslinked.
    Type: Grant
    Filed: April 4, 2006
    Date of Patent: May 28, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Keiichiro Tsubaki, Ryuji Higashi, Masayuki Ikegami, Keiko Yamagishi, Ryo Natori, Takaho Shibata
  • Publication number: 20130016430
    Abstract: An optical element includes a base member having an optically ineffective portion and a light-shielding film disposed on the optically ineffective portion. The light-shielding film contains a cured mixture of an epoxy resin and a phenol resin.
    Type: Application
    Filed: July 12, 2012
    Publication date: January 17, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Ryo Ogawa, Keiichiro Tsubaki, Tetsuo Hino, Daisuke Sano
  • Patent number: 7866806
    Abstract: A novel liquid composition set is provided for forming an image or pattern by functional substances such as a colorant without causing blurring. Each of the liquid compositions of the set includes a functional substance, an amphiphilic block copolyrner or graft copolymer having an organic acid group, and a liquid medium, wherein the organic acid groups of the copolymers are different in pKa, and the amphiphilic polymer contained in the first liquid composition becomes viscous by pH change on contact with the second liquid composition different in pH from the first liquid composition.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: January 11, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Sato, Ikuo Nakazawa, Sakae Suda, Masayuki Ikegami, Keiichiro Tsubaki, Ryuji Higashi, Keiko Yamagishi
  • Patent number: 7704414
    Abstract: A composition comprises a solvent, and an electroconductive substance and an amphiphilic block copolymers having a polyalkenyl ether repeating-unit structure, or a block copolymer enclosing an electroconductive substance. A black ink composition comprises a fine particulate metal having an average particle diameter of not more than 20 nm, an amphiphilic block copolymer, and a solvent. A method for forming an electroconductive pattern by applying the composition. A method for forming an electroconductive pattern by applying a composition comprises a block copolymer enclosing an electroconductive substance, system to form an electroconductive pattern on the substrate.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: April 27, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Sato, Tomoko Maruyama, Ikuo Nakazawa, Ryuji Higashi, Sakae Suda, Masayuki Ikegami, Keiichiro Tsubaki, Keiko Yamagishi