Patents by Inventor Hayato FUSHIMI
Hayato FUSHIMI 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: 11945884Abstract: An object of the present invention is to provide ultrafine fibrous cellulose capable of exhibiting excellent coating suitability when added to paint. The present invention relates to fibrous cellulose having a fiber width of 1,000 nm or less, in which, when the fibrous cellulose is dispersed in water to form a dispersion liquid having a viscosity of 2,500 mPa·s at 23° C., and the dispersion liquid is stirred under predetermined stirring conditions, a viscosity change rate falls within ±50%, calculated by the following formula: viscosity change rate (%)=(viscosity after stirring?viscosity before stirring)/viscosity before stirring×100.Type: GrantFiled: October 16, 2019Date of Patent: April 2, 2024Assignee: OJI HOLDINGS CORPORATIONInventors: Akihiro Tanaka, Hayato Fushimi
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Publication number: 20230203755Abstract: It is an object of the present invention to provide fine fibrous cellulose capable of enhancing transparency and suppressing coloring, when the fine fibrous cellulose are processed into a dispersed solution or a sheet. The present invention relates to fine fibrous cellulose, in which the amount of substituents introduced is less than 0.5 mmol/g and the fiber width is 1 to 10 nm. Moreover, the present invention relates to a dispersed solution and a sheet, each of which comprises fine fibrous cellulose. Furthermore, the present invention relates to a method for producing fine fibrous cellulose, comprising: (A) removing at least a part of substituents from fine fibrous cellulose with a fiber width of 1000 nm or less having the substituents, and (B) performing a uniform dispersion treatment on the resulting fine fibrous cellulose after completion of the (A).Type: ApplicationFiled: May 19, 2021Publication date: June 29, 2023Applicant: OJI HOLDINGS CORPORATIONInventors: Ikue SUGIYAMA, Yusuke MATSUBARA, Rina SHISHIDO, Hayato FUSHIMI, Yoshiharu NISHIKORI
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Patent number: 11643475Abstract: It is an object of the present invention to provide a thickener capable of exhibiting excellent light resistance. The present invention relates to a thickener comprising cellulose fibers having a fiber width of 8 nm or less and water, wherein the thickener is a slurry or a gel, and when the thickener is filled in a colorless and transparent glass cell having an inside dimension of 1 cm in depth×4 cm in width×4.5 cm in height and the thickener is then irradiated with ultraviolet rays with a wavelength of 300 nm or more and 400 nm or less, using a xenon lamp, from the side of the maximum area surface of the glass cell, so as to be an irradiance of 180 W/m2 and an integrated light amount of 500 mJ/m2, the amount of a change in the yellowness before and after ultraviolet irradiation measured in accordance with JIS K 7373 is 10 or less.Type: GrantFiled: October 3, 2017Date of Patent: May 9, 2023Assignee: OJI HOLDINGS CORPORATIONInventors: Hayato Fushimi, Rina Tanaka
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Patent number: 11591481Abstract: It is an object of the present invention to provide a cellulose-containing composition having excellent coating suitability, a production method thereof, and a film. According to the present invention, provided is a cellulose-containing composition comprising cellulose fibers having a fiber width of 1000 nm or less and protein, wherein the protein includes an enzyme, the content of the protein is 1×10?3 parts by mass or less with respect to 1 part by mass of the cellulose fibers, and when the cellulose-containing composition having a solid concentration of 0.4% by mass is obtained, the viscosity of the cellulose-containing composition measured under conditions of 25° C. and a rotation number of 3 rpm is 10 mPa·s or more and 11000 mPa·s or less.Type: GrantFiled: July 13, 2018Date of Patent: February 28, 2023Assignee: OJI HOLDINGS CORPORATIONInventors: Moe Mizukami, Hayato Fushimi, Hirokazu Sunagawa
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Patent number: 11542659Abstract: The present invention was accomplished in order to provide a method for producing a sheet containing fine fibers, which enables production of a sheet containing fine fibers without producing wrinkles. The present invention provides a method for producing a sheet containing fine fibers comprising a coating step of coating a dispersion containing fine fibers having a fiber diameter of 1000 nm or smaller on a base material, and a drying step of drying the dispersion containing fine fibers coated on the base material to form a sheet containing fine fibers.Type: GrantFiled: April 30, 2020Date of Patent: January 3, 2023Assignee: OJI HOLDINGS CORPORATIONInventors: Eiichi Mikami, Mitsuru Tsunoda, Hayato Fushimi
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Patent number: 11447612Abstract: The purpose of the present invention is to provide a composite sheet in which the dimension stability when it is tensed is high and the appearance deterioration and the yellowness change are suppressed. The present invention relates to a sheet comprising; cellulose fibers having a fiber width of 1000 nm or less and having a phosphoric acid group or a phosphoric acid group-derived substituent; and a polyvinyl alcohol-based resin, wherein the sheet has a tensile elastic modulus of 3.4 GPa or more.Type: GrantFiled: July 7, 2017Date of Patent: September 20, 2022Assignee: OJI HOLDINGS CORPORATIONInventors: Koh Sakai, Hayato Fushimi, Hirokazu Sunagawa
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Patent number: 11426763Abstract: An object of the present invention is to provide a laminate having a fiber layer comprising ultrafine cellulose fibers and a resin layer, wherein the two layers have more excellent adhesion properties. The present invention relates to a laminate having at least one fiber layer comprising cellulose fibers with a fiber width of 1000 nm or less, and at least one resin layer that is contacted with one surface of the fiber layer, wherein the resin layer has an adhesion aid.Type: GrantFiled: January 13, 2017Date of Patent: August 30, 2022Assignee: OJI HOLDINGS CORPORATIONInventors: Hayato Fushimi, Hirokazu Sunagawa
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Patent number: 11346053Abstract: It is an object of the present invention is to provide a sheet containing ultrafine cellulose fibers, which is excellent in transparency and water resistance. The present invention relates to a sheet including cellulose fibers having a fiber width of 1000 nm or less, and polyamine polyamide epihalohydrin, wherein the haze of the sheet is 6% or less.Type: GrantFiled: February 9, 2017Date of Patent: May 31, 2022Assignee: OJI HOLDINGS CORPORATONInventors: Koh Sakai, Go Banzashi, Hirokazu Sunagawa, Hayato Fushimi
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Publication number: 20220002442Abstract: An object of the present invention is to provide ultrafine fibrous cellulose capable of exhibiting excellent coating suitability when added to paint. The present invention relates to fibrous cellulose having a fiber width of 1,000 nm or less, in which, when the fibrous cellulose is dispersed in water to form a dispersion liquid having a viscosity of 2,500 mPa·s at 23° C.Type: ApplicationFiled: October 16, 2019Publication date: January 6, 2022Applicant: OJI HOLDINGS CORPORATIONInventors: Akihiro TANAKA, Hayato FUSHIMI
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Publication number: 20210395494Abstract: Provided are a fine fibrous cellulose-containing composition, and a method for manufacturing the same, which are capable of reducing the viscosity of a fine fibrous cellulose dispersion liquid without changing the concentration of fine fibrous cellulose. The fine fibrous cellulose-containing composition contains fine fibrous cellulose having a fiber width of 1,000 nm or less, an enzyme-derived protein, and a protease or a chlorine-containing oxo acid or a salt thereof.Type: ApplicationFiled: October 25, 2019Publication date: December 23, 2021Applicant: OJI HOLDINGS CORPORATIONInventors: Moe MIZUKAMI, Hayato FUSHIMI, Hirokazu SUNAGAWA
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Publication number: 20210301095Abstract: The purpose of the present invention is to provide a composite sheet in which the dimension stability when it is tensed is high and the appearance deterioration and the yellowness change are suppressed. The present invention relates to a sheet comprising; cellulose fibers having a fiber width of 1000 nm or less and having a phosphoric acid group or a phosphoric acid group-derived substituent; and a polyvinyl alcohol-based resin, wherein the sheet has a tensile elastic modulus of 3.4 GPa or more.Type: ApplicationFiled: July 7, 2017Publication date: September 30, 2021Applicant: Oji Holdings CorporationInventors: Koh SAKAI, Hayato FUSHIMI, Hirokazu SUNAGAWA
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Publication number: 20210222367Abstract: It is an object of the present invention to provide an ultrafine cellulose fiber-containing composition having favorable dispersibility even in the presence of a specific organic solvent. The present invention relates to a cellulose fiber-containing composition comprising cellulose fibers having a fiber width of 1000 nm or less, water, and alcohol, wherein the alcohol is at least one type selected from monovalent primary alcohol, monovalent secondary alcohol, and polyhydric alcohol, and the dielectric constant of the cellulose fiber-containing composition at 25° C. is 55 or more and less than 80.Type: ApplicationFiled: December 12, 2017Publication date: July 22, 2021Applicant: OJI HOLDINGS CORPORATIONInventors: Rina TANAKA, Hayato FUSHIMI, Kazuo YAMANE
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Patent number: 11065850Abstract: It is an object of the present invention to provide a laminate excellent in interlayer adhesion properties. The present invention relates to a laminate comprising: a fiber layer formed of cellulose fibers having a fiber width of 1000 nm or less; a resin layer; and an adhesive layer provided between the fiber layer and the resin layer.Type: GrantFiled: September 14, 2016Date of Patent: July 20, 2021Assignee: OJI HOLDINGS CORPORATIONInventors: Hirokazu Sunagawa, Hayato Fushimi, Go Banzashi
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Publication number: 20210207326Abstract: An object of the present invention is to provide a laminate having a fiber layer comprising ultrafine cellulose fibers and a resin layer, wherein the two layers have more excellent adhesion properties. The present invention relates to a laminate having at least one fiber layer comprising cellulose fibers with a fiber width of 1000 nm or less, and at least one resin layer that is contacted with one surface of the fiber layer, wherein the resin layer has an adhesion aid.Type: ApplicationFiled: January 13, 2017Publication date: July 8, 2021Applicant: OJI HOLDINGS CORPORATIONInventors: Hayato FUSHIMI, Hirokazu SUNAGAWA
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Publication number: 20210122932Abstract: It is an object of the present invention to provide a cellulose-containing composition having excellent coating suitability, a production method thereof, and a film. According to the present invention, provided is a cellulose-containing composition comprising cellulose fibers having a fiber width of 1000 nm or less and protein, wherein the protein includes an enzyme, the content of the protein is 1×10?3 parts by mass or less with respect to 1 part by mass of the cellulose fibers, and when the cellulose-containing composition having a solid concentration of 0.4% by mass is obtained, the viscosity of the cellulose-containing composition measured under conditions of 25° C. and a rotation number of 3 rpm is 10 mPa·s or more and 11000 mPa·s or less.Type: ApplicationFiled: July 13, 2018Publication date: April 29, 2021Applicant: OJI HOLDINGS CORPORATIONInventors: Moe MIZUKAMI, Hayato FUSHIMI, Hirokazu SUNAGAWA
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Publication number: 20210009771Abstract: It is an object of the present invention to provide an ultrafine cellulose fiber-containing sheet that is excellent in terms of weather resistance. The present invention relates to a sheet comprising cellulose fibers having a fiber width of 1000 nm or less, wherein the cellulose fibers have anionic functional groups, and the YI increase percentage calculated according to the following equation is 1500% or less. YI increase percentage (%)=(yellowness of the sheet after heating?yellowness of the sheet before heating)/yellowness of the sheet before heating×100, wherein the yellowness of the sheet after heating is a yellowness measured in accordance with JIS K 7373, after the sheet is subjected to hot pressing at 180° C. at 0.5 MPa for 1 minute, whereas the yellowness of the sheet before heating is a yellowness measured in accordance with JIS K 7373, before the sheet is subjected to the hot pressing.Type: ApplicationFiled: December 18, 2018Publication date: January 14, 2021Applicant: OJI Holdings CorporationInventors: Koh SAKAI, Hayato FUSHIMI
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Publication number: 20200332143Abstract: It is an object of the present invention to provide a cellulose fiber-containing composition and a cellulose fiber-containing paint, the particles (aggregates) of which are suppressed in coated products. According to the present invention, provided is a cellulose fiber-containing composition comprising cellulose fibers having a fiber width of 1000 nm or less and water, wherein the image clarity (comb width: 0.125 mm) of a coating film obtained from the following conditions is 55% or more: (Conditions) the cellulose fiber-containing composition, an acrylic resin in an amount of 156 parts by weight based on 1 part by weight of the cellulose fibers, and isocyanate in an amount of 44 parts by weight based on 1 part by weight of the cellulose fibers, are mixed with one another to obtain a coating solution, which is then applied onto a smooth polyethylene terephthalate plate to a thickness of 30 ?m, using an applicator, and immediately after the application of the coating solution, it is dried at 80° C.Type: ApplicationFiled: August 29, 2017Publication date: October 22, 2020Applicant: Oji Holdings CorporationInventors: Emi AIZAWA, Hiroki YAMAMOTO, Rina TANAKA, Hayato FUSHIMI, Kazuo YAMANE
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Patent number: 10808361Abstract: It is an object of the present invention to provide a composite sheet, which achieves all of water repellency, water resistance, transparency and mechanical strength. The present invention relates to a sheet having a fiber layer and a coating layer on the fiber layer, wherein the fiber layer comprises ultrafine cellulose fibers having a fiber width of 1000 nm or less in an amount of 60% by mass or more, the haze of the sheet is 20% or less, and the water contact angle of the surface of the sheet on the side of the coating layer which is measured 30 seconds after completion of the dropping of distilled water is 70 degrees or more.Type: GrantFiled: November 25, 2016Date of Patent: October 20, 2020Assignee: OJI HOLDINGS CORPORATIONInventors: Hirokazu Sunagawa, Koh Sakai, Hayato Fushimi, Go Banzashi
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Publication number: 20200256014Abstract: The present invention was accomplished in order to provide a method for producing a sheet containing fine fibers, which enables production of a sheet containing fine fibers without producing wrinkles. The present invention provides a method for producing a sheet containing fine fibers comprising a coating step of coating a dispersion containing fine fibers having a fiber diameter of 1000 nm or smaller on a base material, and a drying step of drying the dispersion containing fine fibers coated on the base material to form a sheet containing fine fibers.Type: ApplicationFiled: April 30, 2020Publication date: August 13, 2020Applicant: OJI HOLDINGS CORPORATIONInventors: Eiichi MIKAMI, Mitsuru TSUNODA, Hayato FUSHIMI
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Patent number: 10697118Abstract: The present invention was accomplished in order to provide a method for producing a sheet containing fine fibers, which enables production of a sheet containing fine fibers without producing wrinkles. The present invention provides a method for producing a sheet containing fine fibers comprising a coating step of coating a dispersion containing fine fibers having a fiber diameter of 1000 nm or smaller on a base material, and a drying step of drying the dispersion containing fine fibers coated on the base material to form a sheet containing fine fibers.Type: GrantFiled: May 21, 2014Date of Patent: June 30, 2020Assignee: OJI HOLDINGS CORPORATIONInventors: Eiichi Mikami, Mitsuru Tsunoda, Hayato Fushimi