Patents by Inventor Michio Eriguchi
Michio Eriguchi 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: 11884804Abstract: A foam body constituted of a 4-methyl-1-pentene-based polymer, in which one or more temperatures showing a maximum value of loss tangent (tan ?) of dynamic viscoelasticity, which is obtained by dynamic viscoelasticity measurement conducted under the conditions of a temperature increase rate of 4° C./min, a frequency of 1.59 Hz, and a distortion of 0.1%, exist in at least a range of 10° C. or higher and 100° C. or lower, and the maximum value of the loss tangent is 0.5 or more and 3.5 or less. Another aspect relates to a polyolefin-based foam sheet constituted of a 4-methyl-1-pentene-based polymer, in which the difference in Shore A hardness of at least one surface at different times is defined. A further aspect relates to a complex including a foam body constituted of a 4-methyl-1-pentene-based polymer and a member which is bonded to the foam body and is different from the foam body.Type: GrantFiled: February 2, 2018Date of Patent: January 30, 2024Assignee: MITSUI CHEMICALS, INC.Inventors: Tomoya Matayoshi, Takayuki Watanabe, Michio Eriguchi, Satoshi Noma
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Patent number: 11723280Abstract: An electretized film of the present invention includes a cyclic olefin polymer, in which the electretized film is a non-porous film, and a piezoelectric constant d33 in a thickness direction, which is measured by applying a pressing force to the electretized film in the thickness direction, under conditions of a load of 0.5 N, a dynamic load of ±0.25 N, a frequency of 110 Hz, a temperature of 23° C., and a humidity of 50%, is equal to or more than 100 pC/N.Type: GrantFiled: March 1, 2018Date of Patent: August 8, 2023Assignees: MITSUI CHEMICALS, INC., THE SCHOOL CORPORATION KANSAI UNIVERSITYInventors: Yoshiro Tajitsu, Yuzo Nakamura, Tomoya Matayoshi, Takayuki Watanabe, Michio Eriguchi
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Publication number: 20230120980Abstract: A composition includes a 4-methyl-1-pentene-based polymer in which at least one or more temperatures showing a local maximum value of a loss tangent (tan ?) are present in a range of 10° C. or higher and 100° C. or lower, and the local maximum value of the loss tangent is 0.5 or more and 3.5 or less, and an organic compound, in which a content of the organic compound is 5 to 250 parts by mass with respect to 100 parts by mass of the 4-methyl-1-pentene-based polymer, and the organic compound has a viscosity (mPa·s) in a range of 65 to 120, or a ratio between a melt flow rate (g/10 min.) of the 4-methyl-1-pentene-based copolymer and a melt flow rate (g/10 min.) of the organic compound is 1:1.0 to 0.1.Type: ApplicationFiled: March 31, 2021Publication date: April 20, 2023Applicant: MITSUI CHEMICALS, INC.Inventors: Satoshi NOMA, Tomoya MATAYOSHI, Takayuki WATANABE, Michio ERIGUCHI, Ryota HORIYA
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Patent number: 11332643Abstract: Provided is an adhesive member including: a base material having an uneven shape on at least one surface; and a surface layer covering at least a portion of the surface having the uneven shape on the base material.Type: GrantFiled: July 10, 2018Date of Patent: May 17, 2022Assignee: MITSUI CHEMICALS, INC.Inventors: Jun Kamada, Tomoya Matayoshi, Michio Eriguchi, Kaichiro Haruta, Kenichi Fujii, Takashi Unezaki, Kazuo Kohmura
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Publication number: 20200338121Abstract: A carbon dioxide slow-release pack for skin according to the present invention is a carbon dioxide slow-release pack which has a bag shape for slowly releasing carbon dioxide enclosed therein, thereby bringing the carbon dioxide into contact with the skin, and is formed into a bag shape by at least a resin sheet (A), and the resin sheet (A) satisfies at least the following requirements (A-1) and (A-2): (A-1) A carbon dioxide permeability measured under the conditions of 23° C. and a relative humidity of 0% according to JIS K7126-1 is 20 L/(m2·day·atm) or more, (A-2) An Oken-type air permeability measured at 23° C. according to JIS P8117: 2009 is less than 5 ?m/(Pa·s).Type: ApplicationFiled: October 17, 2018Publication date: October 29, 2020Applicants: MITSUI CHEMICALS, INC., KAO CORPORATIONInventors: Tomoya MATAYOSHI, Takayuki WATANABE, Michio ERIGUCHI, Masahito TANAKA
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Publication number: 20200181457Abstract: Provided is an adhesive member including: a base material having an uneven shape on at least one surface; and a surface layer covering at least a portion of the surface having the uneven shape on the base material.Type: ApplicationFiled: July 10, 2018Publication date: June 11, 2020Applicant: MITSUI CHEMICALS, INC.Inventors: Jun KAMADA, Tomoya MATAYOSHI, Michio ERIGUCHI, Kaichiro HARUTA, Kenichi FUJII, Takashi UNEZAKI, Kazuo KOHMURA
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Publication number: 20200061669Abstract: An electretized film of the present invention includes a cyclic olefin polymer, in which the electretized film is a non-porous film, and a piezoelectric constant d33 in a thickness direction, which is measured by applying a pressing force to the electretized film in the thickness direction, under conditions of a load of 0.5 N, a dynamic load of ±0.25 N, a frequency of 110 Hz, a temperature of 23° C., and a humidity of 50%, is equal to or more than 100 pC/N.Type: ApplicationFiled: March 1, 2018Publication date: February 27, 2020Applicants: MITSUI CHEMICALS, INC., THE SCHOOL CORPORATION KANSAI UNIVERSITYInventors: Yoshiro TAJITSU, Yuzo NAKAMURA, Tomoya MATAYOSHI, Takayuki WATANABE, Michio ERIGUCHI
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Publication number: 20190382572Abstract: A foam body constituted of a 4-methyl-1-pentene-based polymer, in which one or more temperatures showing a maximum value of loss tangent (tan ?) of dynamic viscoelasticity, which is obtained by dynamic viscoelasticity measurement conducted under the conditions of a temperature increase rate of 4° C./min, a frequency of 1.59 Hz, and a distortion of 0.1%, exist in at least a range of 10° C. or higher and 100° C. or lower, and the maximum value of the loss tangent is 0.5 or more and 3.5 or less. Another aspect relates to a polyolefin-based foam sheet constituted of a 4-methyl-1-pentene-based polymer, in which the difference in Shore A hardness of at least one surface at different times is defined. A further aspect relates to a complex including a foam body constituted of a 4-methyl-1-pentene-based polymer and a member which is bonded to the foam body and is different from the foam body.Type: ApplicationFiled: February 2, 2018Publication date: December 19, 2019Applicant: Mitsui Chemicals, Inc.Inventors: Tomoya MATAYOSHI, Takayuki WATANABE, Michio ERIGUCHI, Satoshi NOMA
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Publication number: 20190275774Abstract: A polypropylene-based foam sheet (100) of the present invention is a polypropylene-based foam sheet including a polypropylene-based resin; and an inorganic filler, in which the inorganic filler includes one or more selected from talc, mica, and silica, and a content of the inorganic filler in the polypropylene-based foam sheet is equal to or more than 15 parts by mass and equal to or less than 65 parts by mass when a total amount of the polypropylene-based resin and the inorganic filler is set to 100 parts by mass.Type: ApplicationFiled: October 11, 2017Publication date: September 12, 2019Applicant: MITSUI CHEMICALS TOHCELLO, INC.Inventors: Tomoya Matayoshi, Takayuki Watanabe, Michio Eriguchi
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Patent number: 8779017Abstract: A resin foam having fine foam cells is provided at low cost. A method of producing the foam includes preparing a molten resin composition and continuous extrusion foaming of the molten resin composition. The molten resin composition is prepared by melting a resin mixture of resins (A) and (B) by dissolving a foaming agent into the resin mixture. Resins (A) and (B) respectively have appropriately selected glass transition temperatures and resin (B) particles of appropriate diameter are dispersed in resin (A).Type: GrantFiled: November 12, 2009Date of Patent: July 15, 2014Assignee: Mitsui Chemicals, Inc.Inventors: Tamio Kawasumi, Haruo Inoue, Michio Eriguchi, Masaki Misumi
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Patent number: 8658263Abstract: Provided are a shape-retaining film which has excellent adhesion to inks and other functional layers while retaining high shape-retaining properties and a process for producing the shape-retaining film. The shape-retaining film comprises an ethylene homopolymer or an ethylene/a-olefin copolymer having a C3-6 a-olefin content less than 2 wt. %, the ethylene homopolymer or copolymer having a density of 950 kg/m3 or higher and a weight-average molecular weight (Mw)/number-average molecular weight (Mn) ratio of 5-20. The film has a tensile elasticity modulus of 6-50 GPa and has either an angle of recovery from 90 bending of 8 or less or an angle of recovery from 180 bending of 65 or less.Type: GrantFiled: April 27, 2011Date of Patent: February 25, 2014Assignee: Mitsui Chemicals, Inc.Inventors: Tamio Kawasumi, Michio Eriguchi, Shigeo Nishikawa
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Publication number: 20130314644Abstract: Disclosed is a film having polarization selectivity and diffusibility, and a means for easily producing the film. The polarizing diffuser film is composed of substantially one kind of crystalline resin having an intrinsic birefringence of not less than 0.1, has a total light transmittance to visible light of 50-90%, a transmission haze to visible light of 15-90% and a transition polarization degree to visible light of 20-90%.Type: ApplicationFiled: May 13, 2013Publication date: November 28, 2013Applicant: Mitsui Chemicals, Inc.Inventors: Tomoyuki OKAMURA, Tamio KAWASUMI, Yuji INATOMI, Michio ERIGUCHI, Masaki MISUMI, Masataka IWATA, Haruo INOUE, Hiroshi MORI, Hirofumi ZENKOH
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Patent number: 8462297Abstract: Disclosed is a film having polarization selectivity and diffusibility, and a means for easily producing the film. The polarizing diffuser film is composed of substantially one kind of crystalline resin having an intrinsic birefringence of not less than 0.1, has a total light transmittance to visible light of 50-90%, a transmission haze to visible light of 15-90% and a transition polarization degree to visible light of 20-90%.Type: GrantFiled: September 29, 2010Date of Patent: June 11, 2013Assignee: Mitsui Chemicals, Inc.Inventors: Tomoyuki Okamura, Tamio Kawasumi, Yuji Inatomi, Michio Eriguchi, Masaki Misumi, Masataka Iwata, Haruo Inoue, Hiroshi Mori, Hirofumi Zenkoh
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Publication number: 20130143014Abstract: The purpose of the present invention is to provide a shape retaining film excellent in shape retention, and further having high tensile elasticity and good longitudinal tear resistance. The shape retaining film is composed of at least one base material layer containing an ethylene polymer that has the density of 900 kg/m3 or more, and the weight-average molecular weight (Mw)/number-average molecular weight (Mn) of 5 to 20, and at least one soft layer containing a high polymer material. The ethylene polymer is an ethylene homopolymer or an ethylene-?-olefin copolymer in which the content of a-olefin unit having 3 to 6 carbon atoms is less than 2% by weight, The high polymer material has the melting point (Tm2) lower than the melting point (Tm1) of the ethylene polymer, the tensile elasticity of 10 to 50 GPa, and the recovery angle of 65° or less as a result of 180° bending, test.Type: ApplicationFiled: August 24, 2011Publication date: June 6, 2013Applicant: MITSUI CHEMICALS INC.Inventors: Tamio Kawasumi, Michio Eriguchi, Shigeo Nishikawa
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Publication number: 20130045347Abstract: Provided are a shape-retaining film which has excellent adhesion to inks and other functional layers while retaining high shape-retaining properties and a process for producing the shape-retaining film. The shape-retaining film comprises an ethylene homopolymer or an ethylene/?-olefin copolymer having a C3-6 ?-olefin content less than 2 wt. %, the ethylene homopolymer or copolymer having a density of 950 kg/m3 or higher and a weight-average molecular weight (Mw)/number-average molecular weight (Mn) ratio of 5-20. The film has a tensile elasticity modulus of 6-50 GPa and has either an angle of recovery from 90 bending of 8 or less or an angle of recovery from 180 bending of 65 or less.Type: ApplicationFiled: April 27, 2011Publication date: February 21, 2013Applicant: Mitsui Chemicals, Inc.Inventors: Tamio Kawasumi, Michio Eriguchi, Shigeo Nishikawa
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Publication number: 20120262646Abstract: Disclosed are a film with excellent polarization selectivity and excellent diffusion properties, and a means for easily producing the same. The polarizing diffusion film has an intrinsic birefringence of at least 0.1 and substantially comprises one type of crystalline resin; and in the polarizing diffusion film, the total light transmittance is 50 to 90% in relation to visible light, the transmission haze is 15 to 90% in relation to visible light, and the degree of transmission polarization is 20 to 90% in relation to visible light.Type: ApplicationFiled: June 25, 2012Publication date: October 18, 2012Applicant: MITSUI CHEMICALS, INC.Inventors: Masataka Iwata, Tomoyuki Okamura, Koichi Shimada, Yuji Inatomi, Tamio Kawasumi, Michio Eriguchi, Masaki Misumi
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Publication number: 20110051053Abstract: Disclosed is a film having polarization selectivity and diffusibility, and a means for easily producing the film. The polarizing diffuser film is composed of substantially one kind of crystalline resin having an intrinsic birefringence of not less than 0.1, has a total light transmittance to visible light of 50-90%, a transmission haze to visible light of 15-90% and a transition polarization degree to visible light of 20-90%.Type: ApplicationFiled: September 29, 2010Publication date: March 3, 2011Inventors: Tomoyuki OKAMURA, Tamio Kawasumi, Yuji Inatomi, Michio Eriguchi, Masaki Misumi, Masataka Iwata, Haruo Inoue, Hiroshi Mori, Hirofumi Zenkoh
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Publication number: 20100144912Abstract: A resin foam having fine foam cells is provided at low cost. A method of producing the foam includes preparing a molten resin composition and continuous extrusion foaming of the molten resin composition. The molten resin composition is prepared by melting a resin mixture of resins (A) and (B) by dissolving a foaming agent into the resin mixture. Resins (A) and (B) respectively have appropriately selected glass transition temperatures and resin (B) particles of appropriate diameter are dispersed in resin (A).Type: ApplicationFiled: November 12, 2009Publication date: June 10, 2010Applicant: Mitsui Chemicals, Inc.Inventors: Tamio Kawasumi, Haruo Inoue, Michio Eriguchi, Masaki Misumi
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Patent number: 7150615Abstract: A process for injection-foaming a thermoplastic resin by using an injection molding machine with a two-stage-compression screw, injecting a physical foaming agent into the cylinder of the machine at a pressure lower than the storage pressure of the physical foaming agent, mixing it with a melted resin and expanding the volume of the cavity of the mold at the time of injection, and an injection molding machine and resin composition suitable therefore.Type: GrantFiled: August 3, 2004Date of Patent: December 19, 2006Assignee: Mitsui Chemicals, Inc.Inventors: Eiichi Sugihara, Michio Eriguchi, Masaki Misumi
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Publication number: 20060234033Abstract: The expanded product of the present invention is an expanded product having a density of from 0.02 to 0.7 g/cm3, which is obtained by expanding ultra-high-molecular-weight polyethylene having a viscosity average molecular weight of from 300,000 to 10,000,000. This expanded product can be prepared by adding carbon dioxide to ultra-high-molecular-weight polyethylene in the molten state in an extruder, and expanding the resin by extrusion such that each of the surface temperature and the central part temperature of the resin immediately after discharge from the die may be a predetermined temperature, while at the same time setting the residence time and pressure of the resin at the die section to specific values.Type: ApplicationFiled: March 29, 2005Publication date: October 19, 2006Applicant: MITSUI CHEMICALS, INC.Inventors: Shigeo Nishikawa, Masashi Arimoto, Michio Eriguchi