Patents by Inventor Mitsuru Kojima

Mitsuru Kojima 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: 20200018001
    Abstract: The invention provides a laminated nonwoven fabric sheet formed by uniting an ultrafine fiber layer and a hydrophilic short fiber layer, in which the hydrophilic short fiber layer is laminated on one surface or both surfaces of the ultrafine fiber layer, the ultrafine fiber layer is formed by combining 20 to 80% by mass of thermoplastic resin fibers (A) and 80 to 20% by mass of elastomer resin fibers (B) that melt or soften at a temperature lower than a temperature of thermoplastic resin fibers (A), and the ultrafine fiber layer includes a hindered amine compound, the laminated nonwoven fabric sheet is subjected to electret processing, and 10% stretch strength in one direction is different from 10% stretch strength in a direction perpendicular to the one direction.
    Type: Application
    Filed: November 9, 2017
    Publication date: January 16, 2020
    Applicants: JNC CORPORATION, JNC FIBERS CORPORATION
    Inventor: MITSURU KOJIMA
  • Patent number: 10448727
    Abstract: A cosmetic facial mask is described, having high fitting properties onto skin, an excellent skin tightening effect, and an excellent lift-up effect on a flaccid cheek or face line. The cosmetic facial mask includes a laminate in which a non-elastomeric fiber layer and an elastomer layer are integrated through lamination, and has stretchability in a vertical direction of a face.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: October 22, 2019
    Assignees: JNC CORPORATION, JNC FIBERS CORPORATION
    Inventors: Takafumi Ito, Junji Iwata, Yasushi Matsuda, Mitsuru Kojima
  • Patent number: 10052840
    Abstract: A laminated non-woven fabric and a manufactured article using the laminated non-woven fabric are provided. The laminated non-woven fabric is formed by clamping a fibrous layer B between two of fibrous layer A, wherein the fibrous layer B is obtained by using a fiber melting or softening at 120° C. or less, and fibrous layer A includes a fiber neither melting nor softening at 120° C. or less, in which the fibrous layer A and the fibrous layer B are integrated through point thermal compression bonding, and interlayer peeling strength between the fibrous layer A and the fibrous layer B ranges from 0.3 Newton (N)/25 millimeters (mm) to 4.0 N/25 mm.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: August 21, 2018
    Assignees: JNC CORPORATION, JNC FIBERS CORPORATION
    Inventors: Noriko Maeda, Junji Iwata, Yasushi Matsuda, Mitsuru Kojima
  • Patent number: 9662601
    Abstract: The nonwoven fabric is a blended filament nonwoven fabric including a blend of two types of filaments, wherein the two types of filaments are constituted of thermoplastic resins different from each other, an average fiber diameter obtained by dividing the total value of fiber diameters of the filaments present in the nonwoven fabric by the number of the constituent filaments is 0.1 to 10 ?m, and the nonwoven fabric has a specific volume of 12 cm3/g or more; the blended filament nonwoven fabric, wherein the ratio of the number of constituent filaments having fiber diameters of 0.1 to 3 ?m is 50% or more of the filaments constituting the nonwoven fabric, and the ratio of the number of constituent filaments having fiber diameters exceeding 3 ?m is 50% or less of the filaments constituting the nonwoven fabric; or the nonwoven fabric is produced by a melt-blowing process.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: May 30, 2017
    Assignees: JNC CORPORATION, JNC FIBERS CORPORATION
    Inventors: Yasushi Matsuda, Junji Iwata, Mitsuru Kojima, Takafumi Ito
  • Patent number: 9650546
    Abstract: Provided is a novel double-sided adhesive sheet for image display device which can be bonded to the adhesion surface in close contact without space therebetween although there is a step due to printing or the like on the adhesion surface to be bonded to the adhesive sheet. The double-sided adhesive sheet for image display device 1 of the invention is a sheet to bond any two adherends selected from a surface protective panel 2, a touch panel 3, and an image display panel, and the sheet is characterized in that at least one of the adherends (surface protective panel 2) has a stepped portion 2b on an adhesion surface 2a to adhere to the double-sided adhesive sheet 1 and the surface shape of the bonding surface 1a of the double-sided adhesive sheet 1 to be bonded to the adhesion surface 2a is shaped in accordance with the surface shape of the adhesion surface 2a.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: May 16, 2017
    Assignee: MITSUBISHI PLASTICS, INC.
    Inventors: Ryota Yamamoto, Makoto Inenaga, Kazunori Inoue, Mitsuru Kojima
  • Patent number: 9290868
    Abstract: A nonwoven fabric is provided that has biodegradability and has excellent mechanical strength and excellent texture in combination, and a fiber product containing the nonwoven fabric is provided. The biodegradable nonwoven fabric contains at least two kinds of fibers including a fiber A and a fiber B, in which the fiber A contains a first component having biodegradability, and the fiber B contains a second component having biodegradability. The nonwoven fabric contains a mixed fiber web having a mixing ratio (weight ratio) of the fiber A and the fiber B in a range of from 5/95 to 95/5. The first component contains at least one member selected from the group consisting of an aliphatic polyester and an aliphatic polyester copolymer each having a melting point that is higher than a melting point of the second component. A half crystallization time at 85 degree Celsius of the second component is longer than a half crystallization time at 85 degree Celsius of the first component.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: March 22, 2016
    Assignees: JNC Corporation, CHISSO POLYPRO FIBER COMPANY LIMITED
    Inventors: Junji Iwata, Yasushi Matsuda, Mitsuru Kojima
  • Publication number: 20150291852
    Abstract: Provided is a novel double-sided adhesive sheet for image display device which can be bonded to the adhesion surface in close contact without space therebetween although there is a step due to printing or the like on the adhesion surface to be bonded to the adhesive sheet. The double-sided adhesive sheet for image display device 1 of the invention is a sheet to bond any two adherends selected from a surface protective panel 2, a touch panel 3, and an image display panel, and the sheet is characterized in that at least one of the adherends (surface protective panel 2) has a stepped portion 2b on an adhesion surface 2a to adhere to the double-sided adhesive sheet 1 and the surface shape of the bonding surface 1a of the double-sided adhesive sheet 1 to be bonded to the adhesion surface 2a is shaped in accordance with the surface shape of the adhesion surface 2a.
    Type: Application
    Filed: October 10, 2013
    Publication date: October 15, 2015
    Applicant: MITSUBISHI PLASTICS, INC.
    Inventors: Ryota Yamamoto, Makoto Inenaga, Kazunori Inoue, Mitsuru Kojima
  • Patent number: 8951338
    Abstract: Present invention provides an air filter material using a laminated electret nonwoven fabric subjected to electret processing in which one layer or a plurality of layers of nonwoven fabrics (referred to as nonwoven fabric B) including fibers having a mean fiber diameter in the range of 10 micrometers to 100 micrometers and being larger than a mean fiber diameter of fibers constituting nonwoven fabric A are laminated on at least one side of a nonwoven fabric (referred to as nonwoven fabric A) obtained by mixing two kinds of fibers having a mean fiber diameter in the range of 0.1 micrometer to 15 micrometers and having a different melting point (fibers having a lower melting point are defined as fibers D and fibers having a higher melting point are defined as fibers E), and a laminated electret filter material having a low pressure loss and a high collection efficiency. The filter material is suitably used for a medical mask, an industrial mask, a general purpose mask or the like.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: February 10, 2015
    Assignees: JNC Corporation, JNC Fibers Corporation
    Inventors: Yasushi Matsuda, Junji Iwata, Mitsuru Kojima
  • Publication number: 20140318565
    Abstract: A cosmetic facial mask is described, having high fitting properties onto skin, an excellent skin tightening effect, and an excellent lift-up effect on a flaccid cheek or face line. The cosmetic facial mask includes a laminate in which a non-elastomeric fiber layer and an elastomer layer are integrated through lamination, and has stretchability in a vertical direction of a face.
    Type: Application
    Filed: October 2, 2012
    Publication date: October 30, 2014
    Inventors: Takafumi Ito, Junji Iwata, Yasushi Matsuda, Mitsuru Kojima
  • Publication number: 20140165515
    Abstract: The nonwoven fabric is a blended filament nonwoven fabric including a blend of two types of filaments, wherein the two types of filaments are constituted of thermoplastic resins different from each other, an average fiber diameter obtained by dividing the total value of fiber diameters of the filaments present in the nonwoven fabric by the number of the constituent filaments is 0.1 to 10 ?m, and the nonwoven fabric has a specific volume of 12 cm3/g or more; the blended filament nonwoven fabric, wherein the ratio of the number of constituent filaments having fiber diameters of 0.1 to 3 ?m is 50% or more of the filaments constituting the nonwoven fabric, and the ratio of the number of constituent filaments having fiber diameters exceeding 3 ?m is 50% or less of the filaments constituting the nonwoven fabric; or the nonwoven fabric is produced by a melt-blowing process.
    Type: Application
    Filed: August 8, 2012
    Publication date: June 19, 2014
    Applicants: JNC FIBERS CORPORATION, JNC CORPORATION
    Inventors: Yasushi Matsuda, Junji Iwata, Mitsuru Kojima, Takafumi Ito
  • Publication number: 20130209763
    Abstract: A laminated non-woven fabric and a manufactured article using the laminated non-woven fabric are provided. The laminated non-woven fabric is formed by clamping a fibrous layer B between two of fibrous layer A, wherein the fibrous layer B is obtained by using a fiber melting or softening at 120° C. or less, and fibrous layer A includes a fiber neither melting nor softening at 120° C. or less, in which the fibrous layer A and the fibrous layer B are integrated through point thermal compression bonding, and interlayer peeling strength between the fibrous layer A and the fibrous layer B ranges from 0.3 Newton (N)/25 millimeters (mm) to 4.0 N/25 mm.
    Type: Application
    Filed: October 3, 2011
    Publication date: August 15, 2013
    Applicants: JNC FIBERS CORPORATION, JNC CORPORATION
    Inventors: Noriko Maeda, Junji Iwata, Yasushi Matsuda, Mitsuru Kojima
  • Publication number: 20120097037
    Abstract: Present invention provides an air filter material using a laminated electret nonwoven fabric subjected to electret processing in which one layer or a plurality of layers of nonwoven fabrics (referred to as nonwoven fabric B) including fibers having a mean fiber diameter in the range of 10 micrometers to 100 micrometers and being larger than a mean fiber diameter of fibers constituting nonwoven fabric A are laminated on at least one side of a nonwoven fabric (referred to as nonwoven fabric A) obtained by mixing two kinds of fibers having a mean fiber diameter in the range of 0.1 micrometer to 15 micrometers and having a different melting point (fibers having a lower melting point are defined as fibers D and fibers having a higher melting point are defined as fibers E), and a laminated electret filter material having a low pressure loss and a high collection efficiency. The filter material is suitably used for a medical mask, an industrial mask, a general purpose mask or the like.
    Type: Application
    Filed: June 21, 2010
    Publication date: April 26, 2012
    Applicants: JNC FIBERS CORPORATION, JNC CORPORATION
    Inventors: Yasushi Matsuda, Junji Iwata, Mitsuru Kojima
  • Publication number: 20120064789
    Abstract: A nonwoven fabric is provided that has biodegradability and has excellent mechanical strength and excellent texture in combination, and a fiber product containing the nonwoven fabric is provided. The biodegradable nonwoven fabric contains at least two kinds of fibers including a fiber A and a fiber B, in which the fiber A contains a first component having biodegradability, and the fiber B contains a second component having biodegradability. The nonwoven fabric contains a mixed fiber web having a mixing ratio (weight ratio) of the fiber A and the fiber B in a range of from 5/95 to 95/5. The first component contains at least one member selected from the group consisting of an aliphatic polyester and an aliphatic polyester copolymer each having a melting point that is higher than a melting point of the second component. A half crystallization time at 85 degree Celsius of the second component is longer than a half crystallization time at 85 degree Celsius of the first component.
    Type: Application
    Filed: April 23, 2010
    Publication date: March 15, 2012
    Inventors: Junji Iwata, Yasushi Matsuda, Mitsuru Kojima
  • Patent number: 7696118
    Abstract: A production method of a dielectric ceramic composition comprising a main component including barium titanate expressed by a composition formula of BamTiO2+m, wherein “m” satisfies 0.990<m<1.010, a fourth subcomponent including an oxide of R (note that R is at least one selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu), and other subcomponent including at least BaO; comprising steps of preparing a post-reaction material by bringing a material of said main component to react in advance with at least a part of a material of said fourth subcomponent, wherein, when an amount of BaO included in said other subcomponent is n mole with respect to 100 moles of said main component, and said main component and said BaO are expressed by a composition formula of Bam+n/100TiO2+m+n/100, wherein “m” and “n” satisfy 0.994<m+n/100<1.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: April 13, 2010
    Assignee: TDK Corporation
    Inventors: Mitsuru Kojima, Miyuki Yanagida, Masakazu Hosono, Yasuo Watanabe, Akira Sato
  • Publication number: 20080004172
    Abstract: A production method of a dielectric ceramic composition comprising a main component including barium titanate expressed by a composition formula of BamTiO2+m, wherein “m” satisfies 0.990<m<1.010, a fourth subcomponent including an oxide of R (note that R is at least one selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu), and other subcomponent including at least BaO; comprising steps of preparing a post-reaction material by bringing a material of said main component to react in advance with at least a part of a material of said fourth subcomponent, wherein, when an amount of BaO included in said other subcomponent is n mole with respect to 100 moles of said main component, and said main component and said BaO are expressed by a composition formula of Bam+n/100TiO2+m+n/100, wherein “m” and “n” satisfy 0.994<m+n/100<1.
    Type: Application
    Filed: June 8, 2007
    Publication date: January 3, 2008
    Applicant: TDK CORPORATION
    Inventors: Mitsuru Kojima, Miyuki Yanagida, Masakazu Hosono, Yasuo Watanabe, Akira Sato
  • Publication number: 20070232480
    Abstract: Dielectric particles including a main component including barium titanate and R oxide (where R is at least one element selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu), wherein when defining the size of the dielectric particles as “D” and defining the region of a depth from the particle surface of 0% to 10% of said D as a surface region, a region of a depth from the particle surface of more than 10% to less than 40% of the D as an intermediate region, and a region of a depth from the particle surface of 40% to 50% of the D as a center region, in the surface region, the ratio of content of the R oxide decreases from the surface side toward the center of the dielectric particles and in the center region, the ratio of content of the R oxide increases from the surface side toward the center of the dielectric particles.
    Type: Application
    Filed: March 20, 2007
    Publication date: October 4, 2007
    Applicant: TDK CORPORATION
    Inventors: Miyuki Yanagida, Mitsuru Kojima, Tomoyoshi Fujimura, Akira Sato
  • Publication number: 20070203016
    Abstract: A production method of a dielectric ceramic composition comprising a main component including barium titanate expressed by a composition formula of BamTiO2+m, wherein “m” satisfies 0.990<m<1.010, and a fourth subcomponent including an oxide of R (note that R is at least one kind selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu); comprising the step of obtaining a post-reaction material by bringing a material of said main component react with at least a part of a material of said fourth subcomponent in advance: by which it is possible to provide a dielectric ceramic composition having improved specific permittivity without deteriorating other electric characteristics (for example, a temperature characteristic of capacitance, insulation resistance, an accelerated lifetime of insulation resistance and a dielectric loss).
    Type: Application
    Filed: February 23, 2007
    Publication date: August 30, 2007
    Applicant: TDK CORPORATION
    Inventors: Mitsuru Kojima, Miyuki Yanagida, Haruya Hara, Yasuo Watanabe, Akira Sato
  • Publication number: 20070191211
    Abstract: A dielectric ceramic composition comprising a main component including BaTiO3, a fourth subcomponent including an oxide of R1 (note that R1 is at least one selected from Y, Ho, Er, Tm, Yb and Lu) and a fifth subcomponent including an oxide of R2 (note that R2 is at least one selected from Dy, Tb, Gd and Eu); wherein a total number of moles of R1 and R2 with respect to 100 moles of the main component is 2 to 6 moles when calculated as a conversion of the R1 and a conversion of the R2, and a ratio of the fifth subcomponent to the total number of moles of R1 and R2 with respect to 100 moles of the main component is in a relationship of 0.5?R2/(R1+R2)?0.75 when calculated as a conversion of the R1 and a conversion of the R2. According to the present invention, a high temperature load lifetime and capacity-temperature characteristics can be well balanced even when the dielectric layer of the electronic device is made thin, so that a sufficiently reliable dielectric ceramic composition can be provided.
    Type: Application
    Filed: February 9, 2007
    Publication date: August 16, 2007
    Applicant: TDK CORPORATION
    Inventors: Masakazu Hosono, Toshihiro Iguchi, Dan Sakurai, Jun Satoh, Mitsuru Kojima, Takashi Kojima
  • Patent number: 6617023
    Abstract: The present invention relates to a splittable multi-component fiber of good splittability, a method for producing it, and a fibrous article comprising it. More precisely, the invention relates to a splittable multi-component fiber of good splittability favorable for use in the field of industrial materials for battery separators, wipers, filters, etc., and also in the field of sanitary materials for napkin, etc. and relates to a method for producing it, and a fibrous article comprising it.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: September 9, 2003
    Assignee: Chisso Corporation
    Inventors: Toshihiko Tsutsui, Mitsuru Kojima, Masayasu Suzuki, Kazuyuki Sakamoto, Masaru Nishijima
  • Patent number: 6615945
    Abstract: A motorcycle having a housing box and storage space arranged to increase the capacity of the intake system. In a motorcycle, a crank case, an engine, including a cylinder that extends forwardly from the crank case, and a housing box are arranged under a seat. An intake passage extends rearwardly from above the cylinder. An intake port of the intake passage is connected to an air chamber, and an intake port of the air chamber is connected to an air cleaner through a communication path. The air chamber is arranged upwardly of the crank case. The housing box is arranged rearwardly of the air chamber and the air cleaner is arranged to the side of the housing box.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: September 9, 2003
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kazutaka Minami, Mitsuru Kojima, Yuichi Moriyama