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Yukinobu Hasegawa, Hiroyoshi Shimomura, Koichi Murai, Masatoshi Maruyama, Toyokichi Tange: Toner for developing an electrostatically charged image. Nippon Carbide Kogyo Kabushiki Kaisha, Sherman & Shalloway, February 26, 1991: US04996127 (138 worldwide citation)

This invention provides a toner composed of associated particles of secondary particles comprising primary particles of a polymer having an acidic or basic polar group and particles of a coloring agent and optionally a charge controlling agent and a process for producing the toner. Preferably, the c ...


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Hiroshi Kamada, Hitoshi Masuda, Yukinobu Hasegawa, Hiroyoshi Shimomura, Hiroshi Serizawa, Kensuke Okuda, Masatoshi Maruyama: Colored toner for developing electrostatic images. Nippon Carbide Kogyo Kabushiki Kaisha, Sherman and Shalloway, December 9, 1997: US05695899 (7 worldwide citation)

A colored toner for developing electrostatic images which has a degree of gelation of 2.0% or less and comprises an association of secondary particles containing polymer particles having acidic polar groups or basic polar groups and an organic pigment and/or an organic dye treated with a treatment a ...


4
Hiroyoshi Shimomura, Yukinobu Hasegawa, Hiroshi Serizawa, Masatoshi Maruyama: Toners for developing electrostatic image. Nippon Carbide Kogyo Kabushiki Kaisha, Sherman and Shalloway, January 7, 1997: US05591556 (5 worldwide citation)

A toner for developing an electrostatic image comprises primary colored resin particles having a mean particle size of 0.6 to 10 microns which have been agglomerated to form secondary particles having a particle size of 1.2 to 20 microns. The primary colored resin particles are formed from fine elem ...


5
Hiroshi Kamada, Hitoshi Masuda, Yukinobu Hasegawa, Hiroyoshi Shimomura, Hiroshi Serizawa, Kensuke Okuda, Masatoshi Maruyama: Colored toner for developing electrostatic images. Nippon Carbide Kogyo Kabushiki Kaisha, Sherman and Shalloway, November 4, 1997: US05683849

A colored toner for developing electrostatic images which has a degree of gelation of 2.0% or less and comprises an association of secondary particles containing polymer particles having acidic polar groups or basic polar groups and an organic pigment and/or an organic dye treated with a treatment a ...


6
Yasushi Sakakura, Yukinobu Hasegawa: Spark plug and method of manufacturing spark plug. NGK Spark Plug, Kusner & Jaffe, January 12, 2016: US09236715

A ground electrode comprised of a noble metal tip having an outer circumferential surface, a holder having an inner circumferential surface defining a through hole for the noble metal tip thereon, and a body to which the holder is joined. At least one of a) the inner circumferential surface of the h ...


7
Yukinobu Hasegawa, Kei Takahashi: Spark plug and manufacturing method thereof. NGK Spark Plug, Leason Ellis, May 17, 2016: US09343877

A spark plug includes a center electrode, a ground electrode, and a cylindrical metal shell. The ground electrode is welded to the metal shell via a weld portion. The weld portion is formed along the outer circumference end part of an annular part in the ground electrode. The weld portion has a plur ...


8
Yasushi Sakakura, Yukinobu Hasegawa: Spark plug. NGK Spark Plug, Leason Ellis, October 13, 2015: US09160146

A spark plug includes an electrode wherein a plurality of fusion regions are formed by melting to each other a circular noble metal tip having a diameter of not less than 2 mm and a base material disposed around an outer periphery of the noble metal tip. In a particular tip cross section, a total le ...


9
Yasushi Sakakura, Yukinobu Hasegawa, Kei Takahashi: Spark plug having center electrode tip of varying widths. NGK Spark Plug, Leason Ellis, October 27, 2015: US09172215

A spark plug includes a tip joined to a center electrode. The coefficient of linear thermal expansion of the center electrode is greater than that of the tip. The tip has a gap-forming portion having a maximum width of 1.2 mm or greater and forming a gap in cooperation with the ground electrode and ...


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Yukinobu Hasegawa, Yasushi Sakakura: Igniter plug and method of manufacturing igniter plug. NGK Spark Plug, January 10, 2013: US20130009534-A1

A ground electrode of an igniter plug has inlets for supplying cooling fluid therethrough to a first space formed between an insulator and the ground electrode, and first outlets located forward of the inlets and radially outward of the inner circumference of a ground electrode forward-end portion a ...



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