Patents by Inventor Hidenori Hayakawa
Hidenori Hayakawa 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: 11215293Abstract: A yoke is provided with a notch, notched from two points P1 and P2 on a circumference forming a sleeve-side insertion hole toward the outside of the circumference, the notch having a minimum distance between the points P1 and P2 as a width W and the distance from a straight line linking the points P1 and P2 in a direction orthogonal to the straight line as a length L. The width W of the notch is set on the basis of a target attraction force for attracting a plunger, the attraction force increasing with an increase in the width W, and the length L of the notch is greater than or equal to a prescribed length Ld where the attraction force increasing with an increase in the length L becomes constant at the target attraction force in the set width W irrespective of an increase in the length L.Type: GrantFiled: September 21, 2018Date of Patent: January 4, 2022Assignee: ADVICS CO., LTD.Inventors: Junichi Fukuda, Koichi Hashida, Hidenori Hayakawa
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Patent number: 11156308Abstract: An electromagnetic valve comprises a valve body having a dividing wall which separates a first chamber and a second chamber and a through-hole formed in the dividing wall and in which a valving element is inserted, a guide member having a main body portion disposed between an outer peripheral surface of the valving element and an inner peripheral surface of the valving element and forming a gap with the inner peripheral surface of the through-hole, an insertion hole through which the valving element is inserted and which slides against the outer peripheral surface of the valving element, a flange portion provided on an one-end side of the main body portion and being in contact with the dividing wall and a tapered portion provided in the one-end side and disposed inside the first chamber. The flange portion is pushed toward the dividing wall by a pushing member.Type: GrantFiled: October 25, 2017Date of Patent: October 26, 2021Assignee: ADVICS CO., LTD.Inventors: Hidenori Hayakawa, Kazuyuki Kobayashi
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Publication number: 20200248829Abstract: A yoke is provided with a notch, notched from two points P1 and P2 on a circumference forming a sleeve-side insertion hole toward the outside of the circumference, the notch having a minimum distance between the points P1 and P2 as a width W and the distance from a straight line linking the points P1 and P2 in a direction orthogonal to the straight line as a length L. The width W of the notch is set on the basis of a target attraction force for attracting a plunger, the attraction force increasing with an increase in the width W, and the length L of the notch is greater than or equal to a prescribed length Ld where the attraction force increasing with an increase in the length L becomes constant at the target attraction force in the set width W irrespective of an increase in the length L.Type: ApplicationFiled: September 21, 2018Publication date: August 6, 2020Applicant: ADVICS CO., LTD.Inventors: Junichi FUKUDA, Koichi HASHIDA, Hidenori HAYAKAWA
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Publication number: 20200056719Abstract: An electromagnetic valve comprises a valve body having a dividing wall which separates a first chamber and a second chamber and a through-hole formed in the dividing wall and in which a valving element is inserted, a guide member having a main body portion disposed between an outer peripheral surface of the valving element and an inner peripheral surface of the valving element and forming a gap with the inner peripheral surface of the through-hole, an insertion hole through which the valving element is inserted and which slides against the outer peripheral surface of the valving element, a flange portion provided on an one-end side of the main body portion and being in contact with the dividing wall and a tapered portion provided in the one-end side and disposed inside the first chamber. The flange portion is pushed toward the dividing wall by a pushing member.Type: ApplicationFiled: October 25, 2017Publication date: February 20, 2020Applicant: ADVICS CO., LTD.Inventors: Hidenori HAYAKAWA, Kazuyuki KOBAYASHI
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Patent number: 5466660Abstract: Compositions comprising herbicidal tetrazolinones of the formula (I) ##STR1## wherein X is chlorine or bromine, Y is hydrogen, chlorine, bromine, methyl or ethyl, andR.sup.1 and R.sup.2 are the same or different C.sub.2-4 alkyl,and at least one additional herbicide.Type: GrantFiled: April 21, 1994Date of Patent: November 14, 1995Assignee: Nihon Bayer Agrochem K.K.Inventors: Toshio Goto, Hidenori Hayakawa, Yukiyoshi Watanabe, Shin-ichi Narabu, Akihiko Yanagi
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Patent number: 5346880Abstract: This invention relates to novel pyrimidinylthioalkane derivatives of the formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are defined in the specification and A represents hydroxy, and B represents hydrogen or A and B together form a carbonyl group, a process for their production and a method of using said derivatives to combat unwanted plant growth.Type: GrantFiled: April 6, 1993Date of Patent: September 13, 1994Assignee: Nihon Bayer Agrochem K.K.Inventors: Toshio Goto, Yoshinori Kitagawa, Hidenori Hayakawa, Katsuhiko Shibuya, Ryo Watanabe
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Patent number: 5347009Abstract: Herbicidal 1-(3-halo-4-trifluoromethylphenyl) tetrazolinones of the formula ##STR1## wherein X represents halogen,R.sup.1 represents C.sub.1-3 alkyl, andR.sup.2 represents C.sub.1-3 alkyl.Type: GrantFiled: May 26, 1993Date of Patent: September 13, 1994Assignee: Nihon Bayer Agrochem K.K.Inventors: Toshio Goto, Hidenori Hayakawa, Yukiyoshi Watanabe, Akihiko Yanagi
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Patent number: 5347010Abstract: Novel tetrazolinones of the formula (I) ##STR1## wherein X is chlorine or bromine,Y is hydrogen, chlorine, bromine, methyl or ethyl, andR.sup.1 and R.sup.2 are the same or different C.sub.2-4 alkyl, a process for their preparation, and the use of the new compounds as herbicides, especially against paddy-weeds.Type: GrantFiled: July 1, 1993Date of Patent: September 13, 1994Assignee: Nihon Bayer Agrochem K.K.Inventors: Toshio Goto, Hidenori Hayakawa, Yukiyoshi Watanabe, Shin-ichi Narabu, Akihiko Yanagi
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Patent number: 5344814Abstract: Herbicidal 1-(3,4-disubstituted phenyl)tetrazolinones of the formula ##STR1## wherein X represents halogen,Y represents trifluoromethoxy or trifluoromethylthio,R.sup.1 represents propyl, isopropyl or allyl, andR.sup.2 represents propyl, isopropyl or allyl.Type: GrantFiled: May 26, 1993Date of Patent: September 6, 1994Assignee: Nihon Bayer Agrochem K.K.Inventors: Toshio Goto, Hidenori Hayakawa, Yukiyoshi Watanabe, Akihiko Yanagi
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Patent number: 5342938Abstract: Novel benzoxazines of the formula (I) ##STR1## the use of the new compounds as herbicides, and novel compounds of the formula (IX) as intermediates ##STR2## are disclosed.Type: GrantFiled: February 5, 1993Date of Patent: August 30, 1994Assignee: Nihon Bayer Agrochem K.K.Inventors: Toyohiko Kume, Toshio Goto, Atsumi Kamochi, Hidenori Hayakawa, Akihiko Yanagi, Tadao Asami
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Patent number: 5342954Abstract: Herbicidal 1-(3-halo-4-substituted phenyl)tetrazolinones of the formula ##STR1## wherein X represents halogen,Y represents isopropyl or isopropoxy,R.sup.1 represents ethyl, propyl, isopropyl or allyl, andR.sup.2 represents ethyl, propyl, isopropyl or allyl.Type: GrantFiled: May 26, 1993Date of Patent: August 30, 1994Assignee: Nihon Bayer Agrochem K.K.Inventors: Toshio Goto, Hidenori Hayakawa, Yukiyoshi Watanabe, Akihiko Yanagi
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Patent number: 5296454Abstract: The invention relates to novel acetanilides of the formula (I) ##STR1## wherein Ar represents phenyl, furyl or thienyl,R.sup.1 represents hydrogen, C.sub.1-5 -alkyl, C.sub.3-6 -cycloalkyl, C.sub.3-6 -cycloalkyl-methyl, C.sub.3-5 alkenyl, C.sub.3-5 -alkynyl, C.sub.1-3 -haloalkyl, C.sub.3-5 -epoxyalkyl, C.sub.1-3 -alkoxy-C.sub.1-4 -alkyl, C.sub.1-3 -alkylthio-C.sub.1-4 -alkyl, C.sub.1-3 -alkoxycarbonyl-C.sub.1-2 -alkyl, cyano-C.sub.1-3 -alkyl, or aralkylR.sup.2 represents hydrogen or C.sub.1-3 -alkyl,R.sup.3 represents hydrogen or C.sub.1-3 -alkyl,X represents halogen, andY represents iso-propyl, tert-butyl, C.sub.1-2 -haloalkyl, C.sub.1-2 -haloalkoxy, C.sub.1-2 -haloalkylthio or C.sub.1-2 -alkylsulfonyl,to processes for their preparation and to their use as herbicides. The invention also relates to novel intermediates and to processes for their preparation.Type: GrantFiled: June 26, 1992Date of Patent: March 22, 1994Assignee: Nihon Bayer Agrochem K.K.Inventors: Toshio Goto, Hidenori Hayakawa, Itsuko Manabe, Akihiko Yanagi
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Patent number: 5207818Abstract: Novel benzoxazines of the formula (I) ##STR1## wherein Q represents ##STR2## X represents hydrogen or fluorine; and R represents alkyl, alkenyl, alkynyl, cyclopropylmethyl, cyanoalkyl, alkoxyalkyl, or alkylthioalkyl;the use of the new compounds as herbicides, and novel compounds of the formula (IX) as intermediates ##STR3## wherein Y represents hydrogen, nitro, or amino;X represents hydrogen or fluorine; andR' represents hydrogen or R;but Y and X do not at the same time represent hydrogen; are disclosed.Type: GrantFiled: September 16, 1991Date of Patent: May 4, 1993Assignee: Nihon Bayer Agrochem K.K.Inventors: Toyohiko Kume, Toshio Goto, Atsumi Kamochi, Hidenori Hayakawa, Akihiko Yanagi, Tadao Asami
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Patent number: 5158600Abstract: Herbicidal 3-hydroxy-2-cyclohexen-1-ones of the formula ##STR1## wherein R.sup.1 and R.sup.2 each is hydrogen or methyl,R.sup.3 is C.sub.1-4 alkyl, cyclopropylmethyl, C.sub.3-4 alkenyl which may be substituted by one to three halogen atoms or C.sub.3-4 alkynyl,R.sup.4 is C.sub.1-4 alkyl,R.sup.5 each independently is halogen, C.sub.1-4 alkyl, C.sub.1-4 haloalkyl, C.sub.1-4 alkoxy, C.sub.1-4 haloalkoxy, C.sub.1-4 alkylthio, C.sub.1-4 haloalkylthio or cyano,n is 0, 1 or 2, andm is 0, 1 or 2.Type: GrantFiled: May 6, 1991Date of Patent: October 27, 1992Assignee: Nihon Tokushu Noyaku Seizo K.K.Inventors: Toyohiko Kume, Toshio Goto, Atsumi Kamochi, Hidenori Hayakawa, Tadao Asami, Akihiko Yanagi
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Patent number: 4836844Abstract: Novel herbicidally active N-benzothiazolyl-2-5-dihydropyrroles of the formula ##STR1## in which R is hydrogen or an acyl group,X is a halogen atom, an alkyl group, a haloalkyl group, a haloalkoxy group or a phenyl group,n is 0, 1 or 2, andY is an alkyl group.Type: GrantFiled: June 25, 1987Date of Patent: June 6, 1989Assignee: Nihon Tokushu Noyaku Seizo K.K.Inventors: Toyohiko Kume, Toshio Goto, Atsumi Kamochi, Akihiko Yanagi, Hidenori Hayakawa, Shigeki Yagi
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Patent number: 4804394Abstract: Novel benzoxazines of the formula (I) ##STR1## wherein X is hydrogen or halogen,R.sup.1 is hydrogen or C.sub.1 -C.sub.2 -alkyl,R.sup.2 is cyano, trimethylsilyl, trimethylsilylmethoxycarbonyl, C.sub.1 -C.sub.4 -alkylthio or cyclopropyl andQ is ##STR2## and the use of the novel compounds as herbicides, and intermediates for the preparation of the novel benzoxazines.Type: GrantFiled: August 24, 1987Date of Patent: February 14, 1989Assignee: Nihon Tokushu Noyaku Seizo K.K.Inventors: Toyohiko Kume, Toshio Goto, Atsumi Kamochi, Naoko Yamaguchi, Akihiko Yanagi, Hidenori Hayakawa, Shigeki Yagi, Hiroshi Miyauchi
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Patent number: 4729784Abstract: Novel dialkylmaleimides of the formula (I) ##STR1## and the use of the novel compounds as herbicides.Type: GrantFiled: June 23, 1987Date of Patent: March 8, 1988Assignee: Nihon Tokushu Noyaku Seizo K.K.Inventors: Toyohiko Kume, Toshio Goto, Atsumi Kamochi, Naoko Yamaguchi, Akihiko Yanagi, Hidenori Hayakawa, Shigeki Yagi
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Patent number: 4623377Abstract: Tetrahydroquinolin-1-ylcarbonylimidazoles of the formula ##STR1## in which n is 0, 1, 2 or 3,which possess herbicidal and fungicidal activity. The corresponding intermediates of the formula ##STR2## are also new.Type: GrantFiled: April 19, 1985Date of Patent: November 18, 1986Assignee: Nihon Tokushu Noyaku Seizo K.K.Inventors: Yoshio Kurahashi, Kozo Shiokawa, Toshio Goto, Shinzo Kagabu, Atsumi Kamochi, Koichi Moriya, Hidenori Hayakawa