Patents by Inventor Ryota YANAGISAWA
Ryota YANAGISAWA 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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Publication number: 20240147761Abstract: A method for manufacturing a display apparatus with high display quality is provided. The method is for manufacturing a display apparatus including first to third insulators, first and second conductors, and a first EL layer. The first conductor is formed over the first insulator, and the second insulator is formed over the first insulator and over the first conductor. Next, a first opening portion reaching the first conductor is formed in a region of the second insulator overlapping with the first conductor. A positive photoresist is applied to regions over the first and second insulators and over the first conductor, and a second opening portion with an inversely tapered structure reaching the first conductor and the second insulator is formed in a region of the photoresist overlapping with the first opening portion and the first conductor.Type: ApplicationFiled: January 20, 2022Publication date: May 2, 2024Inventors: Yuichi YANAGISAWA, Shinya SASAGAWA, Shiro NISHIZAKI, Ryota HODO
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Publication number: 20240107861Abstract: A display device capable of displaying high-quality images can be provided. A display device includes a first light-emitting element, a second light-emitting element, a first protective layer, a second protective layer, and a gap. The first light-emitting element includes a first lower electrode, a first EL layer over the first lower electrode, a first upper electrode over the first EL layer, and the second light-emitting element includes a second lower electrode, a second EL layer over the second lower electrode, and a second upper electrode over the second EL layer. The first light-emitting element and the second light-emitting element are adjacent to each other. The first protective layer is provided over the first light-emitting element and the second light-emitting element and includes a region in contact with the side surface of the first EL layer and the side surface of the second EL layer. The second protective layer is provided over the first protective layer.Type: ApplicationFiled: December 7, 2021Publication date: March 28, 2024Inventors: Shunpei YAMAZAKI, Takayuki IKEDA, Ryota HODO, Yuichi YANAGISAWA
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Publication number: 20230369637Abstract: There is provided a secondary battery where the occurrence of adverse effects due to folds of a continuously folded separator is reduced. A secondary battery includes a plurality of sheet-like positive electrodes, a plurality of sheet-like negative electrodes, and a belt-like separator placed between the positive electrodes and the negative electrodes. The positive electrodes and the negative electrodes are alternately stacked with the separator interposed therebetween. The separator is continuously folded to be interposed between the positive electrodes and the negative electrodes. Folds of the continuously folded separator are at least a specified distance away from ends of the negative electrodes.Type: ApplicationFiled: July 25, 2023Publication date: November 16, 2023Applicant: Envision AESC Energy Devices Ltd.Inventors: Koichi ZAMA, Yasuhiro MATSUMARU, Ryota YANAGISAWA
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Publication number: 20220158191Abstract: A battery (10) includes a positive electrode (100) and a first insulating layer (322). The positive electrode (100) includes a current collector (110) and a first active material layer (122). The current collector (110) includes a first surface (112) and a second surface (114). The second surface (114) is opposite to the first surface (112). The first active material layer (122) is positioned over the first surface (112) of the current collector (110). The first insulating layer (322) faces the first active material layer (122) of the positive electrode (100). The first active material layer (122) contains at least one carbon. The first insulating layer (322) contains magnesium hydroxide particles. A product of an area density and a specific surface area of the magnesium hydroxide particles is equal to or greater than 0.20 times a sum of products of an area density and a specific surface area of each of the at least one carbon.Type: ApplicationFiled: March 5, 2020Publication date: May 19, 2022Applicant: ENVISION AESC JAPAN LTD.Inventors: Ryota YANAGISAWA, Yoshimasa YAMAMOTO
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Publication number: 20220158174Abstract: A battery (10) includes a positive electrode (100) and a negative electrode (200). The positive electrode (100) includes an active material layer (120) (an active material layer (122) and an active material layer (124)) and a layer (300) (a layer (310) and a layer (320)). The layer (300) is over the active material layer (120). The layer (300) contains magnesium hydroxide particles (A). The magnesium hydroxide particles (A) are surface treated with stearic acid.Type: ApplicationFiled: March 5, 2020Publication date: May 19, 2022Applicant: Envision AESC Japan Ltd.Inventors: Ryota YANAGISAWA, Yoshimasa YAMAMOTO
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Publication number: 20200243895Abstract: There is provided a secondary battery where the occurrence of adverse effects due to folds of a continuously folded separator is reduced. A secondary battery (1) includes a plurality of sheet-like positive electrodes (100), a plurality of sheet-like negative electrodes (200), and a belt-like separator (300) placed between the positive electrodes (100) and the negative electrodes (200). The positive electrodes (100) and the negative electrodes (200) are alternately stacked with the separator (300) interposed therebetween. The separator (300) is continuously folded to be interposed between the positive electrodes (100) and the negative electrodes (200). Folds of the continuously folded separator (300) are at least a specified distance away from ends of the negative electrodes (200).Type: ApplicationFiled: June 20, 2018Publication date: July 30, 2020Inventors: Koichi ZAMA, Yasuhiro MATSUMARU, Ryota YANAGISAWA
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Publication number: 20200136100Abstract: A separator includes a base material and insulating layers. The insulating layers are on both surfaces (first surface and second surface) of the base material. Each active material layer has a thickness equal to or less than 60 ?m. A ratio of the thickness of the insulating layer (a total of the thickness of the insulating layer on the first surface of the base material and the thickness of the insulating layer on the second surface of the base material) to the thickness of the base material is equal to or greater than 1.50 and equal to or less than 3.00.Type: ApplicationFiled: October 23, 2019Publication date: April 30, 2020Applicant: Envision AESC Energy Devices, Ltd.Inventors: Yoshimasa YAMAMOTO, Ryota YANAGISAWA
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Publication number: 20200006736Abstract: There is provided a method for producing a laminated type battery including a separator and electrode sheets arranged in lamination through the separator, the method including subjecting a charged separator to a charge neutralization treatment to thereby reduce a charge voltage thereof, and laminating the separator having the reduced charge voltage on the electrode sheet.Type: ApplicationFiled: December 18, 2017Publication date: January 2, 2020Applicant: Envision AESC Energy Devices Ltd.Inventor: Ryota YANAGISAWA
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Patent number: 10193184Abstract: A method for manufacturing a lithium ion secondary battery, the lithium ion secondary battery including a positive electrode and a negative electrode disposed with a separator sandwiched therebetween and contained together with an electrolytic solution in an outer case including a flexible film, wherein the quantity of dissolved nitrogen in the electrolytic solution in injecting the electrolytic solution into the outer case is 100 ?g/mL or less.Type: GrantFiled: September 4, 2015Date of Patent: January 29, 2019Assignee: NEC ENERGY DEVICES, LTD.Inventors: Tomoyuki Ohta, Ryota Yanagisawa, Takayuki Suzuki
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Publication number: 20170279153Abstract: A method for manufacturing a lithium ion secondary battery, the lithium ion secondary battery including a positive electrode and a negative electrode disposed with a separator sandwiched therebetween and contained together with an electrolytic solution in an outer case including a flexible film, wherein the quantity of dissolved nitrogen in the electrolytic solution in injecting the electrolytic solution into the outer case is 100 ?g/mL or less.Type: ApplicationFiled: September 4, 2015Publication date: September 28, 2017Applicant: NEC ENERGY DEVICES, LTD.Inventors: Tomoyuki OHTA, Ryota YANAGISAWA, Takayuki SUZUKI