Patents by Inventor Kenji Hirai
Kenji Hirai 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: 20240316975Abstract: A thermosensitive recording material including a support and a thermosensitive coloring layer provided on the support, in which the thermosensitive coloring layer contains (A) a coloring substance, (B) a kraft lignin in which a content of dimethyl disulfide is 2.5 ppm or less and (C) a specific developer.Type: ApplicationFiled: May 25, 2022Publication date: September 26, 2024Inventors: Hajime SAITO, Yasuo MORI, Mayumi YASUMOTO, Kenta ICHIMURA, Masashige SUGIMOTO, Tatsuro KOSHI, Yoshimi MIDORIKAWA, Masaya TOSAKA, Kenji HIRAI
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Publication number: 20240308260Abstract: A thermosensitive recording medium having a thermosensitive recording layer comprising a colorless or pale colored electron donating leuco dye and an electron accepting color developing agent on a substrate, and a protective layer on the thermosensitive recording layer, wherein the thermosensitive recording layer contains at least one kind of urea compound represented by the following general formula (Formula 1) as the electron accepting color developing agent, and wherein the protective layer contains an acrylic resin (wherein X represents —O— or —NH—, R1 represents a hydrogen atom or —SO2—R3, R3 represents a substituted or unsubstituted alkyl group, an aralkyl group or an aryl group, R2 represents a hydrogen atom or an alkyl group, m represents an integer of 0 to 2, and n represents 0 or 1).Type: ApplicationFiled: March 10, 2022Publication date: September 19, 2024Inventors: Kenji HIRAI, Masaya TOSAKA, Yuuki INAMURA, Yoshimi MIDORIKAWA
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Publication number: 20240301581Abstract: An object of the present invention is to provide a technique for improving the lightfastness of a dyed anodic oxide film of aluminum or an aluminum alloy. Provided are a Lightfastness improver for a dyed anodic oxide film of aluminum or an aluminum alloy, and a method for improving the Lightfastness of the film.Type: ApplicationFiled: March 3, 2022Publication date: September 12, 2024Applicant: OKUNO CHEMICAL INDUSTRIES CO., LTD.Inventors: Tomo Moriguchi, Ayumi Hongo, Toku Yasuda, Kentaro Hirai, Katsuyuki Tanaka, Kenji Hara
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Patent number: 12053997Abstract: Provided is a thermosensitive recording medium having a sufficient water resistance to moisture and humidity, such as for outdoor use in rainy weather and the like, and also having a superior color developing sensitivity, print image quality when printing at high speed, ink fixability and solvent resistance and the like. As the protective layer comprises a specific silane-modified acrylic resin which is an aqueous emulsion of core-shell type p articles, in a thermosensitive recording medium having a thermosensitive recording layer on a substrate and a protective layer on the thermosensitive recording layer, the thermosensitive re cording medium has a sufficient water resistance and also has a superior color developing sensitivity, print image quality when printing at high speed, ink fixability and solvent resistance and the like.Type: GrantFiled: December 8, 2020Date of Patent: August 6, 2024Assignee: Nippon Paper Industries Co., Ltd.Inventors: Kenji Hirai, Yoshimi Midorikawa, Yuka Murata, Kentaro Kawasaki
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Publication number: 20240253769Abstract: A leading-edge high-lift device according to an embodiment of the present invention is a leading-edge high-lift device that is deployable and retractable from/into a fixed leading edge of a main wing of an aircraft and includes a slat main body and a buffering portion. The slat main body includes a leading edge portion, a trailing edge portion that forms a gap between a trailing edge portion and the main wing during deployment, a cusp portion formed at a lower edge of the leading edge portion, a cove portion formed between the cusp portion and the trailing edge portion, and an inboard end surface that is formed between the leading edge portion and the cove portion and is positioned on a fuselage side of the aircraft. The buffering portion is provided at an inboard end portion of the slat main body including the inboard end surface and an inboard-side surface of the cove portion and reduces pressure fluctuations in airflow on the inboard end surface or the inboard-side surface of the cove portion.Type: ApplicationFiled: March 31, 2022Publication date: August 1, 2024Inventors: Mitsuhiro MURAYAMA, Tohru HIRAI, Kazuomi YAMAMOTO, Masataka KOHZAI, Yosuke UENO, Kazuhide ISOTANI, Kenji HAYAMA, Kensuke HAYASHI
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Publication number: 20240190156Abstract: A thermosensitive recording medium comprising an undercoat layer provided on a substrate, and a thermosensitive recording layer containing a colorless or pale colored electron donating leuco dye and an electron accepting color developing agent provided on the undercoat layer, wherein the thermosensitive recording layer contains as the electron accepting color developing agent a urea compound represented by the following general formula (Formula 1) (wherein X represents —O— or —NH—, R1 represents a hydrogen atom or —SO2—R3, R3 represents a substituted or unsubstituted alkyl group, aralkyl group or aryl group, R2 represents a hydrogen atom or an alkyl group, m represents an integer of 0 to 2, and n represents 0 or 1), and wherein the undercoat layer contains 50 to 95 weight % of a pigment by solid and 50 weight % or more of plastic hollow particles by solid with respect to the pigment.Type: ApplicationFiled: March 10, 2022Publication date: June 13, 2024Inventors: Kenji HIRAI, Masaya TOSAKA, Yuuki INAMURA, Yoshimi MIDORIKAWA
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Patent number: 11945249Abstract: The present invention provides a thermosensitive recording medium having a high degree of water resistance and excellent surface qualities. The thermosensitive recording medium has a thermosensitive recording layer comprising a colorless or pale colored basic leuco dye and an electron accepting developing agent on a substrate, but does not have a protective layer on the thermosensitive recording layer, and the thermosensitive recording layer further comprises (i) a carboxy-modified polyvinyl alcohol as a binder, (ii) an epichlorohydrin resin and a modified polyamine/amide resin (excluding those contained in the category of epichlorohydrin resin) as crosslinking agents, and (iii) an acrylic resin with a glass transition temperature (Tg) of lower than or equal to 50 degree C. and a minimum film forming temperature (MFT) of higher than or equal to 40 degree C.Type: GrantFiled: February 25, 2020Date of Patent: April 2, 2024Assignee: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Kentaro Kawasaki, Yoshimi Midorikawa, Kenji Hirai
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Patent number: 11912052Abstract: Provided is a thermosensitive recording medium having excellent oil resistance among various performances required for the thermosensitive recording medium. The thermosensitive recording medium has a thermosensitive recording layer comprising a colorless or pale colored electron donating leuco dye and an electron accepting color developing agent on a substrate, wherein the thermosensitive recording layer contains N-[2-(3-phenylureido)phenyl] benzenesulfonamide and an urea-based compound represented by the general formula 1 as the electron accepting color developing agents, wherein R1 represents a substituted or unsubstituted alkyl group, aralkyl group or aryl group, and R2 represents a hydrogen atom or an alkyl group.Type: GrantFiled: November 11, 2020Date of Patent: February 27, 2024Inventors: Kentaro Kawasaki, Yuka Murata, Kenji Hirai, Yoshimi Midorikawa
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Publication number: 20230144275Abstract: Provided is a thermosensitive recording medium being excellent in oil resistance among various performances required for the thermosensitive recording medium, and being further excellent in heat resistance, plasticizer resistance, and printing (recording) run-ability. That is a thermosensitive recording medium having a thermosensitive recording layer comprising a colorless or pale colored electron donating leuco dye and an electron accepting color developing agent on a substrate, wherein the thermosensitive recording layer contains at least two kinds of urea compounds. The two kinds of urea compounds comprise the first urea compound being represented by the following general formula 1, and the second urea compound being represented by the following general formula 2.Type: ApplicationFiled: February 8, 2021Publication date: May 11, 2023Inventors: Kenji Hirai, Kentaro Kawasaki, Yuka Murata, Yoshimi Midorikawa
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Patent number: 11613850Abstract: An object is to provide a base paper for paper tubes that has lower environmental impact and is used for manufacturing of paper tubes offering excellent water resistance. As a solution, a base paper for paper tubes is provided, wherein: it has two or more but no more than five paper layers; the paper layers are bonded by a water-soluble or water-dispersible adhesive; and its elution rate is 2.0 percent or lower.Type: GrantFiled: September 19, 2019Date of Patent: March 28, 2023Assignee: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Junji Yamamoto, Youko Jyoumei, Kenji Hirai
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Publication number: 20230027721Abstract: Provided is a thermosensitive recording medium having a sufficient water resistance to moisture and humidity, such as for outdoor use in rainy weather and the like, and also having a superior color developing sensitivity, print image quality when printing at high speed, ink fixability and solvent resistance and the like. As the protective layer comprises a specific silane-modified acrylic resin which is an aqueous emulsion of core-shell type p articles, in a thermosensitive recording medium having a thermosensitive recording layer on a substrate and a protective layer on the thermosensitive recording layer, the thermosensitive re cording medium has a sufficient water resistance and also has a superior color developing sensitivity, print image quality when printing at high speed, ink fixability and solvent resistance and the like.Type: ApplicationFiled: December 8, 2020Publication date: January 26, 2023Inventors: Kenji Hirai, Yoshimi Midorikawa, Yuka Murata, Kentaro Kawasaki
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Publication number: 20220410610Abstract: Provided is a thermosensitive recording medium having excellent oil resistance among various performances required for the thermosensitive recording medium. The thermosensitive recording medium has a thermosensitive recording layer comprising a colorless or pale colored electron donating leuco dye and an electron accepting color developing agent on a substrate, wherein the thermosensitive recording layer contains N-[2-(3-phenylureido)phenyl] benzenesulfonamide and an urea-based compound represented by the general formula 1 as the electron accepting color developing agents, wherein R1 represents a substituted or unsubstituted alkyl group, aralkyl group or aryl group, and R2 represents a hydrogen atom or an alkyl group.Type: ApplicationFiled: November 11, 2020Publication date: December 29, 2022Inventors: Kentaro Kawasaki, Yuka Murata, Kenji Hirai, Yoshimi Midorikawa
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Patent number: 11439721Abstract: To provide an aldehyde scavenger and a method for removing aldehydes by using the same, for quickly and continuously capturing aldehydes. An aldehyde scavenger comprising at least one O-substituted hydroxylamine or at least one chemically acceptable salt thereof, is used against an aldehyde generation source.Type: GrantFiled: December 27, 2017Date of Patent: September 13, 2022Assignees: TOSOH CORPORATION, Sagami Chemical Research InstituteInventors: Yukinori Sudo, Takahiro Masuda, Osamu Kobayashi, Takuri Ozaki, Kenji Hirai
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Publication number: 20220161588Abstract: The present invention provides a thermosensitive recording medium having a high degree of water resistance and excellent surface qualities. The thermosensitive recording medium has a thermosensitive recording layer comprising a colorless or pale colored basic leuco dye and an electron accepting developing agent on a substrate, but does not have a protective layer on the thermosensitive recording layer, and the thermosensitive recording layer further comprises (i) a carboxy-modified polyvinyl alcohol as a binder, (ii) an epichlorohydrin resin and a modified polyamine/amide resin (excluding those contained in the category of epichlorohydrin resin) as crosslinking agents, and (iii) an acrylic resin with a glass transition temperature (Tg) of lower than or equal to 50 degree C. and a minimum film forming temperature (MFT) of higher than or equal to 40 degree C.Type: ApplicationFiled: February 25, 2020Publication date: May 26, 2022Inventors: Kentaro KAWASAKI, Yoshimi MIDORIKAWA, Kenji HIRAI
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Publication number: 20220042247Abstract: An object is to provide a base paper for paper tubes that has lower environmental impact and is used for manufacturing of paper tubes offering excellent water resistance. As a solution, a base paper for paper tubes is provided, wherein: it has two or more but no more than five paper layers; the paper layers are bonded by a water-soluble or water-dispersible adhesive; and its elution rate is 2.0 percent or lower.Type: ApplicationFiled: September 19, 2019Publication date: February 10, 2022Inventors: Junji YAMAMOTO, Youko JYOUMEI, Kenji HIRAI
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Publication number: 20200406658Abstract: Provided is a thermosensitive recording medium, which is excellent in color developing property, especially excellent in bar code readability, under severe environment, further, excellent in resistance to discoloration under severe environment. That is a thermosensitive recording medium having a thermosensitive recording layer comprising a colorless or pale colored electron donating leuco dye and an electron accepting color developing agent on a substrate, wherein the thermosensitive recording layer comprises, as the electron accepting color developing agent, a specific sulfone compound and a phenolic compound in a specific ratio, wherein the phenolic compound contains two or more hydroxyl groups and two or more diphenylsulfone backbone but contains neither urethane bond nor urea bond. The thermosensitive recording layer optionally may further comprise a specific urea-urethane-based compound.Type: ApplicationFiled: March 1, 2019Publication date: December 31, 2020Inventors: Kenji Hirai, Koji Kutsuwa, Yoshimi Midorikawa
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Publication number: 20200061225Abstract: To provide an aldehyde scavenger and a method for removing aldehydes by using the same, for quickly and continuously capturing aldehydes. An aldehyde scavenger comprising at least one O-substituted hydroxylamine or at least one chemically acceptable salt thereof, is used against an aldehyde generation source.Type: ApplicationFiled: December 27, 2017Publication date: February 27, 2020Applicants: TOSOH CORPORATION, Sagami Chemical Research InstituteInventors: Yukinori SUDO, Takahiro MASUDA, Osamu KOBAYASHI, Takuri OZAKI, Kenji HIRAI
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Patent number: 10527189Abstract: A valve actuator is a valve actuator that drives opening and closing of a poppet valve and includes a motor and a transmission mechanism that transmits a drive force of the motor to the poppet valve. The transmission mechanism includes a booster mechanism. The booster mechanism is a three-dimensional toggle mechanism that includes a cylinder, an input disc that rotates about an axis in the cylinder, an output disc that reciprocates along an axial direction in the cylinder, and a link that connects the input disc and the output disc.Type: GrantFiled: April 30, 2018Date of Patent: January 7, 2020Assignee: IHI CorporationInventors: Kohei Taya, Hatsuo Mori, Kenji Hirai, Yu Hirata, Masahiro Tanaka, Takeshi Takaki
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Patent number: 10464362Abstract: As a thermosensitive recording medium utilizes a coloring reaction between a colorless or pale colored electron donating leuco dye and an electron accepting color developing agent, a thermosensitive recording medium using an environment-friendly color developing agent is provided. Provided is a thermosensitive recording medium having a thermosensitive recording layer comprising a colorless or pale colored electron donating leuco dye and an electron accepting color developing agent on a substrate, wherein the thermosensitive recording layer comprises a gluconolactone as the electron accepting color developing agent.Type: GrantFiled: October 19, 2016Date of Patent: November 5, 2019Assignee: Nippon Paper Industries Co., Ltd.Inventors: Yasuaki Matsumori, Akihito Ogino, Kenji Hirai
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Publication number: 20180311987Abstract: As a thermosensitive recording medium utilizes a coloring reaction between a colorless or pale colored electron donating leuco dye and an electron accepting color developing agent, a thermosensitive recording medium using an environment-friendly color developing agent is provided. Provided is a thermosensitive recording medium having a thermosensitive recording layer comprising a colorless or pale colored electron donating leuco dye and an electron accepting color developing agent on a substrate, wherein the thermosensitive recording layer comprises a gluconolactone as the electron accepting color developing agent.Type: ApplicationFiled: October 19, 2016Publication date: November 1, 2018Inventors: Yasuaki Matsumori, Akihito Ogino, Kenji Hirai