Patents by Inventor Kentaro Kawasaki
Kentaro Kawasaki 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).
-
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
-
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
-
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
-
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
-
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
-
Patent number: 11511557Abstract: An inkjet recording medium, comprising an ink-receiving layer containing an inorganic pigment, a binder, an inkjet ink-fixing agent comprising a cationic compound, and organic spherical particles disposed on at least one surface of a base paper, wherein the ink-receiving layer further contains a water-soluble metal salt and 5 parts by weight or more to 15 parts by weight or less of polyvinyl alcohol (A) with a polymerization degree of 700 or less and 20 parts by weight or more to 40 parts by weight or less of polyvinyl alcohol (B) with a polymerization degree of 1200 or more as the binder with respect to 100 parts by weight of the ink-receiving layer; and a volume 50% average particle diameter (D50) as measured by a laser diffraction/scattering method of the organic spherical particles is 15.0 ?m or more.Type: GrantFiled: August 31, 2018Date of Patent: November 29, 2022Assignee: Nippon Paper Industries Co., Ltd.Inventors: Koji Kutsuwa, Tadashi Yoshida, Kentaro Kawasaki
-
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
-
Publication number: 20210177177Abstract: An object is to provide a base paper for paper tube 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 tube is provided, characterized in that: it has three or more but no more than five paper layers; its overall basis weight is 250 g/m2 or more; and among the paper layers, the innermost layer and outermost layer have a basis weight of 25 g/m2 or more but no more than 75 g/m2.Type: ApplicationFiled: June 17, 2019Publication date: June 17, 2021Inventors: Kentaro KAWASAKI, Akio HOSHINO, Hirosuke TSUNODA, Yuka MURATA, Yoshio YOSHIDA
-
Publication number: 20200282756Abstract: An inkjet recording medium, comprising an ink-receiving layer containing an inorganic pigment, a binder, an inkjet ink-fixing agent comprising a cationic compound, and organic spherical particles disposed on at least one surface of a base paper, wherein the ink-receiving layer further contains a water-soluble metal salt and 5 parts by weight or more to 15 parts by weight or less of polyvinyl alcohol (A) with a polymerization degree of 700 or less and 20 parts by weight or more to 40 parts by weight or less of polyvinyl alcohol (B) with a polymerization degree of 1200 or more as the binder with respect to 100 parts by weight of the ink-receiving layer; and a volume 50% average particle diameter (D50) as measured by a laser diffraction/scattering method of the organic spherical particles is 15.0 ?m or more.Type: ApplicationFiled: August 31, 2018Publication date: September 10, 2020Inventors: Koji Kutsuwa, Tadashi Yoshida, Kentaro Kawasaki
-
Patent number: 10320363Abstract: A high-frequency module includes a longitudinally coupled surface acoustic wave filter and a low-noise amplifier that is connected to the surface acoustic wave filter. The input impedance of the surface acoustic wave filter connected to the low-noise amplifier differs from the output impedance thereof. On a Smith chart, the output impedance in the pass band of the surface acoustic wave filter is present in a region between a first output impedance and a second output impedance, the first output impedance being the output impedance of the surface acoustic wave filter where a gain of the low-noise amplifier is maximum, the second output impedance being the output impedance of the surface acoustic wave filter where a noise figure of the low-noise amplifier is minimum.Type: GrantFiled: August 1, 2017Date of Patent: June 11, 2019Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Chihiro Shoda, Takayuki Okude, Kentaro Kawasaki, Kentaro Funahashi, Takayuki Yamada
-
Patent number: 10270421Abstract: An elastic wave device includes a piezoelectric substrate, first to third IDT electrodes provided on the piezoelectric substrate, a dielectric film provided on the piezoelectric substrate and covering the first to third IDT electrodes, the thickness of the dielectric film in a first region in which the dielectric film covers the first IDT electrodes is different from the thickness of the dielectric film in a second region in which the dielectric film covers the second IDT electrodes and the thickness of the dielectric film in a third region in which the dielectric film covers the third IDT electrodes. The density equivalent thickness of each of the first IDT electrodes and the second IDT electrodes are equal to each other, and the density equivalent thickness of each of the third IDT electrodes is different from the density equivalent thickness of each of the first IDT electrodes and the second IDT electrodes.Type: GrantFiled: October 4, 2018Date of Patent: April 23, 2019Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Kentaro Kawasaki
-
Publication number: 20190044498Abstract: An elastic wave device includes a piezoelectric substrate, first to third IDT electrodes provided on the piezoelectric substrate, a dielectric film provided on the piezoelectric substrate and covering the first to third IDT electrodes, the thickness of the dielectric film in a first region in which the dielectric film covers the first IDT electrodes is different from the thickness of the dielectric film in a second region in which the dielectric film covers the second IDT electrodes and the thickness of the dielectric film in a third region in which the dielectric film covers the third IDT electrodes. The density equivalent thickness of each of the first IDT electrodes and the second IDT electrodes are equal to each other, and the density equivalent thickness of each of the third IDT electrodes is different from the density equivalent thickness of each of the first IDT electrodes and the second IDT electrodes.Type: ApplicationFiled: October 4, 2018Publication date: February 7, 2019Inventor: Kentaro KAWASAKI
-
Publication number: 20180041188Abstract: A high-frequency module includes a longitudinally coupled surface acoustic wave filter and a low-noise amplifier that is connected to the surface acoustic wave filter. The input impedance of the surface acoustic wave filter connected to the low-noise amplifier differs from the output impedance thereof. On a Smith chart, the output impedance in the pass band of the surface acoustic wave filter is present in a region between a first output impedance and a second output impedance, the first output impedance being the output impedance of the surface acoustic wave filter where a gain of the low-noise amplifier is maximum, the second output impedance being the output impedance of the surface acoustic wave filter where a noise figure of the low-noise amplifier is minimum.Type: ApplicationFiled: August 1, 2017Publication date: February 8, 2018Inventors: Chihiro SHODA, Takayuki OKUDE, Kentaro KAWASAKI, Kentaro FUNAHASHI, Takayuki YAMADA
-
Patent number: 3938227Abstract: A method of producing a novel deeply creped fabric by using partially bulked yarn. Gyratory (or torque-imparted) partially bulked yarn obtained from a known twisting - heat setting - untwisting process is additionally twisted, or said process is conducted on the pre-twisted yarn to give extra twists to the non-bulked portions, so as to make conspicuous the difference between the bulked and non-bulked portions, and a fabric is woven or knit by using such yarn and is subjected to a creping treatment.Type: GrantFiled: December 26, 1973Date of Patent: February 17, 1976Assignee: Chori Company LimitedInventors: Kentaro Kawasaki, Keizo Takizawa