Patents by Inventor Yasunobu Kashima

Yasunobu Kashima 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: 20210238392
    Abstract: A polyimide precursor-containing aqueous composition contains at least one polymer material selected from the group consisting of a water-insoluble fibrous organic substance and a polyalkylene oxide having a viscosity-average molecular weight of 5 million or more, a polyimide precursor, particles, and water.
    Type: Application
    Filed: January 15, 2021
    Publication date: August 5, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yasunobu KASHIMA, Kosaku YOSHIMURA, Tomoya SASAKI, Kosuke NAKADA, Hidekazu HIROSE
  • Publication number: 20210202925
    Abstract: A porous polyimide film has plural pores, in which an average flattening of the plural pores is within a range of 0.1 to 0.7, a coefficient of variation of a distance between adjacent pores is within a range of 0.10 to 0.40, and a front surface and aback surface communicate with each other through the plural pores.
    Type: Application
    Filed: April 20, 2020
    Publication date: July 1, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kosuke NAKADA, Hidekazu HIROSE, Yasunobu KASHIMA, Kosaku YOSHIMURA, Tomoya SASAKI
  • Publication number: 20210189066
    Abstract: A polyimide precursor solution includes a polyimide precursor; an imidazole compound; a tertiary amine compound other than the imidazole compound; and an aqueous solvent containing water, in which a ratio of the number of moles of the imidazole compound to the number of moles of a tetracarboxylic dianhydride component of the polyimide precursor is 0.5 or more and less than 1.6, a ratio of the number of moles of the tertiary amine compound to the number of moles of the imidazole compound is within a range of 0.3 to 6.0, and a content of the water is 50% by mass or more with respect to the aqueous solvent.
    Type: Application
    Filed: April 13, 2020
    Publication date: June 24, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kosaku YOSHIMURA, Yasunobu KASHIMA, Tomoya SASAKI, Kosuke NAKADA, Hidekazu HIROSE
  • Patent number: 11043718
    Abstract: A porous polyimide film has an acid value within a range of 7 mgKOH/g to 20 mgKOH/g determined by acid-base titration, contains a metal group including alkali metals excluding Li, an alkaline earth metals, and silicon at a total content of 100 ppm or less relative to the porous polyimide film, and has a moisture absorption ratio of 0.5% or less.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: June 22, 2021
    Assignee: FUJIFILM BUSINESS INNOVATION CORP.
    Inventors: Kosaku Yoshimura, Yasunobu Kashima, Hajime Sugahara, Hidekazu Hirose
  • Patent number: 11036153
    Abstract: A toner set includes a color toner and a transparent toner that has a pressure phase transition property. The color toner and the transparent toner satisfy 1.0?tan ?1?4.0 and 1.2?tan ?1/tan ?2?3.0 where tan ?1 represents tan ? of the color toner at 100° C., and tan ?2 represents tan ? of the transparent toner at 100° C.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: June 15, 2021
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Takahiro Ishizuka, Yasunobu Kashima, Hajime Sugahara, Susumu Yoshino
  • Publication number: 20210087428
    Abstract: A polyimide precursor solution includes: a polyimide precursor; an aqueous solvent containing a water-soluble organic solvent and water; and particles, in which the particles have a volume average particle diameter within a range of 2.5 ?m to 30 ?m, an average circularity within a range of 0.900 to 0.990, and a standard deviation of circularity distribution of less than or equal to 0.1.
    Type: Application
    Filed: January 21, 2020
    Publication date: March 25, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kosuke NAKADA, Kosaku YOSHIMURA, Yasunobu KASHIMA, Hidekazu HIROSE
  • Publication number: 20210079162
    Abstract: A polyimide precursor solution includes a polyimide precursor having a weight average molecular weight within a range of 20000 to 80000, particles, and an aqueous solvent. The aqueous solvent contains an organic amine compound (A) (excluding a water-soluble organic solvent (B) described below), a water-soluble organic solvent (B) containing at least one selected from the group consisting of N-methyl-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone, N,N-dimethylformamide, and N,N-dimethylacetamide, and water (C). A content ratio [(A):(B):(C)] of (A), (B), and (C) is within a range of 0.02 to 0.07:0.02 to 0.05:0.88 to 0.96 in terms of mass ratio.
    Type: Application
    Filed: January 15, 2020
    Publication date: March 18, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yasunobu KASHIMA, Kosaku YOSHIMURA, Kosuke NAKADA, Hidekazu HIROSE
  • Publication number: 20210070939
    Abstract: A polyimide precursor solution includes a polyimide precursor, an aqueous solvent containing dimethyl sulfoxide and water, and particles. The content of the dimethyl sulfoxide relative to the particles is within a range of 0.15 to 2.00 in terms of mass ratio.
    Type: Application
    Filed: January 17, 2020
    Publication date: March 11, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kosaku YOSHIMURA, Kosuke NAKADA, Yasunobu KASHIMA, Hidekazu HIROSE
  • Publication number: 20210018854
    Abstract: A toner set includes a color toner and a transparent toner that has a pressure phase transition property. The color toner and the transparent toner satisfy 1.0?tan ?1?4.0 and 1.2?tan ?1/tan ?2?3.0 where tan ?1 represents tan ? of the color toner at 100° C., and tan ?2 represents tan ? of the transparent toner at 100° C.
    Type: Application
    Filed: January 14, 2020
    Publication date: January 21, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Takahiro ISHIZUKA, Yasunobu KASHIMA, Hajime SUGAHARA, Susumu YOSHINO
  • Patent number: 10870105
    Abstract: Metatitanic acid particles have absorption at wavelengths of 450 nm and 750 nm in a visible absorption spectrum, have a surface to which a metal compound having a metal atom and a carbon atom is bonded through an oxygen atom, and satisfy the following inequality: 0.03?A?0.3, wherein A represents a value of {(peak intensity of C—O bond+peak intensity of C?O bond)/(peak intensity of C—C bond+peak intensity of C?C bond} in a C 1s XPS spectrum.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: December 22, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Takeshi Iwanaga, Hideaki Yoshikawa, Hiroyoshi Okuno, Yasunobu Kashima, Sakae Takeuchi
  • Patent number: 10807058
    Abstract: A silica-titania composite aerogel particle includes: a base particle including silicon and titanium whose element ratio Si/Ti is more than 0 and 6 or less; and a surface layer present on the base particle and including a metal compound having a metal atom and a hydrocarbon group. The silica-titania composite aerogel particle has absorption at wavelengths of 450 nm and 750 nm in a visible absorption spectrum, has a BET specific surface area in the range of 200 m2/g to 1,200 m2/g, and has a value A in the range of 0.03 to 0.3. The value A is calculated by formula: A=(peak intensity of C—O bond+peak intensity of C?O bond)/(peak intensity of C—C bond+peak intensity of C?C bond). The peak intensity is obtained from a C is XPS spectrum.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: October 20, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yasuo Kadokura, Yuka Zenitani, Hiroyoshi Okuno, Hideaki Yoshikawa, Yasunobu Kashima, Takeshi Iwanaga, Shunsuke Nozaki, Sakae Takeuchi
  • Patent number: 10807070
    Abstract: Provided is a silica titania composite aerogel particle including a base particle in which an element ratio Si/Ti of silicon to titanium is greater than 0 and equal to or lower than 6. A BET specific surface area of the silica titania composite particle is within a range of 200 m2/g to 1200 m2/g, and the silica titania composite particle has absorption at wavelengths of 450 nm and 750 nm.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: October 20, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yasunobu Kashima, Hideaki Yoshikawa, Yasuo Kadokura, Takeshi Iwanaga, Shunsuke Nozaki, Sakae Takeuchi, Yuka Zenitani, Hiroyoshi Okuno
  • Patent number: 10792641
    Abstract: A structure includes a base material; a surface layer that contains a binder resin and a titanium compound particle having absorption at 450 nm and 750 nm in a visible absorption spectrum and a BET specific surface area within a range of 100 m2/g to 1200 m2/g.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: October 6, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Sakae Takeuchi, Hideaki Yoshikawa, Hiroyoshi Okuno, Yasunobu Kashima, Takeshi Iwanaga
  • Publication number: 20200274126
    Abstract: An all-solid-state battery includes a positive electrode active material layer containing a positive electrode active material; a negative electrode active material layer containing a negative electrode active material; and a solid electrolyte layer containing a solid electrolyte and a porous polyimide film which holds the solid electrolyte. The porous polyimide film has a void ratio of 60% or more and 80% or less and a pore diameter of 0.1 ?m or more and 10 ?m or less.
    Type: Application
    Filed: July 24, 2019
    Publication date: August 27, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hajime SUGAHARA, Hidekazu HIROSE, Tomoya SASAKI, Kosaku YOSHIMURA, Yasunobu KASHIMA
  • Publication number: 20200266409
    Abstract: A porous polyimide film has an acid value within a range of 7 mgKOH/g to 20 mgKOH/g determined by acid-base titration, contains a metal group including alkali metals excluding Li, an alkaline earth metals, and silicon at a total content of 100 ppm or less relative to the porous polyimide film, and has a moisture absorption ratio of 0.5% or less.
    Type: Application
    Filed: September 5, 2019
    Publication date: August 20, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kosaku YOSHIMURA, Yasunobu KASHIMA, Hajime SUGAHARA, Hidekazu HIROSE
  • Publication number: 20200239656
    Abstract: There is provided a porous polyimide film in which the pore distribution width A represented by the following formula is 1.15 or less, the average pore diameter is within a range of 0.50 ?m to 3.0 ?m, and the air permeation speed is 30 seconds or less: A=(D84/D16)1/2 wherein D16 is the pore diameter at 16% cumulation from the small diameter side of pores, and D84 is the pore diameter at 84% cumulation from the small diameter side of pores.
    Type: Application
    Filed: August 14, 2019
    Publication date: July 30, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yasunobu KASHIMA, Kosaku YOSHIMURA, Hajime SUGAHARA, Hidekazu HIROSE
  • Patent number: 10722866
    Abstract: A titanium oxide film by continuous titanium oxide, includes a metallic compound that has a metal atom and a hydrocarbon group and is bonded to a surface of the film, in which absorption occurs at wavelengths of 450 nm and 750 nm.
    Type: Grant
    Filed: September 3, 2018
    Date of Patent: July 28, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Hideaki Yoshikawa, Sakae Takeuchi, Yasunobu Kashima, Takeshi Iwanaga, Hiroyoshi Okuno
  • Patent number: 10668456
    Abstract: A titanium oxide particle includes a metal having a hydrocarbon group, which is bonded to a surface of the titanium oxide particle through an oxygen atom, and absorbs light having a wavelength of 450 nm and light having a wavelength of 750 nm, wherein an element ratio C/Ti between carbon C and titanium Ti in a surface of the titanium oxide particle is from 0.3 to 1.2, and a reduced amount of C/Ti on the surface of the titanium oxide particle before and after irradiation with an ultraviolet ray having a wavelength of 352 nm and at an irradiation intensity of 1.3 mW/cm2 for 20 hours is from 0.1 to 0.9.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: June 2, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Takeshi Iwanaga, Hiroyoshi Okuno, Hideaki Yoshikawa, Yasunobu Kashima, Sakae Takeuchi
  • Patent number: 10668457
    Abstract: A metatitanic acid particle includes a metal having a hydrocarbon group, which is bonded to a surface of the metatitanic acid particle through an oxygen atom, and absorbs light having a wavelength of 450 nm and light having a wavelength of 750 nm, wherein an element ratio C/Ti between carbon C and titanium Ti in a surface of the metatitanic acid particle is from 0.3 to 1.2, and a reduced amount of C/Ti on the surface of the metatitanic acid particle before and after irradiation with an ultraviolet ray having a wavelength of 352 nm and at an irradiation intensity of 1.3 mW/cm2 for 20 hours is from 0.1 to 0.9.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: June 2, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Hiroyoshi Okuno, Hideaki Yoshikawa, Yasunobu Kashima, Takeshi Iwanaga, Sakae Takeuchi
  • Patent number: 10563018
    Abstract: A titanium oxide aerogel particle has absorption at wavelengths of 450 nm and 750 nm in a visible absorption spectrum, a surface to which a metal compound containing a metal atom and a hydrocarbon group is bonded via an oxygen atom, a BET specific surface area in a range of 120 m2/g to 1,000 m2/g, and a value A is in the range of 0.03 to 0.3. The value A is calculated by formula: A={(peak intensity of C—O bond+peak intensity of C?O bond)/(peak intensity of C—C bond+peak intensity of C?C bond)}. In the formula, the peak intensity is a value determined from a C 1s XPS spectrum.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: February 18, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Hideaki Yoshikawa, Hiroyoshi Okuno, Yasunobu Kashima, Takeshi Iwanaga, Sakae Takeuchi, Yuka Zenitani, Shunsuke Nozaki, Yasuo Kadokura