Patents by Inventor Yutaka Ishibashi

Yutaka Ishibashi 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).

  • Publication number: 20220279780
    Abstract: In order that an agriculturally active ingredient, particularly a water-insoluble or water-hardly soluble agriculturally active ingredient sufficiently exerts its effects, it is used preferably in the form of an agricultural formulation having the agriculturally active ingredient dissolved, particularly a clear agricultural formulation having not only the agriculturally active ingredient but also other components contained in the agricultural formulation dissolved. When the agricultural formulation is practically used, if foaming when diluted with water is intense, foam may overflow from a tank in which the solution is prepared. A clear agricultural formulation having the agriculturally active ingredient dissolved and further other components contained in the agricultural formulation dissolved, and its foaming when diluted with water suppressed, is required.
    Type: Application
    Filed: July 27, 2020
    Publication date: September 8, 2022
    Applicant: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Mitsuo SANO, Takao AWAZU, Takashi OKADA, Yutaka ISHIBASHI, Yusuke KOBAYASHI
  • Patent number: 10524468
    Abstract: The present invention relates to a microcapsule suspension containing (1) an oil core compound having a pesticide active agent dispersed in an oil compound, (2) an aqueous solution containing a polycationic colloid and a polyanionic colloid in a ratio that the polycationic colloid is from 0.02 to 1% by weight and the polyanionic colloid is from 0.02 to 2% by weight, and (3) a pH adjuster.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: January 7, 2020
    Assignee: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Yutaka Ishibashi, Yusuke Takigami
  • Patent number: 10060472
    Abstract: An outer peripheral surface of the small-diameter step portion is formed with an engagement groove extending in a circumferential direction. The retainer plate has a plurality of engagement claws protruding radially inward from an inner periphery of the retainer plate defining the fitting hole and configured to be engaged to the engagement groove. In a state that the fitting hole is fitted to the small-diameter step portion, the engagement claws are formed by axially pressing the inner periphery of the retainer plate, including at least thickness reduction parts formed in advance at a peripheral edge between an inner peripheral surface of the fitting hole and a side surface of the retainer plate, and plastically deforming the inner periphery of the retainer plate so as to protrude radially inward, and the engagement claws are engaged to the engagement groove.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: August 28, 2018
    Assignee: NSK LTD.
    Inventor: Yutaka Ishibashi
  • Patent number: 10001174
    Abstract: A fixing plate (40) is provided with through holes (45) for reducing the rigidity of the fixing plate (40) between a latch hole (41) and boss parts (42), the through holes being disposed between the latch hole (41) and the boss parts (42) and radially outward from the outer circumferential surface of an outer ring (31).
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: June 19, 2018
    Assignee: NSK LTD.
    Inventor: Yutaka Ishibashi
  • Publication number: 20180139956
    Abstract: The present invention relates to a microcapsule suspension containing (1) an oil core compound having a pesticide active agent dispersed in an oil compound, (2) an aqueous solution containing a polycationic colloid and a polyanionic colloid in a ratio that the polycationic colloid is from 0.02 to 1% by weight and the polyanionic colloid is from 0.02 to 2% by weight, and (3) a pH adjuster.
    Type: Application
    Filed: May 20, 2016
    Publication date: May 24, 2018
    Applicant: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Yutaka ISHIBASHI, Yusuke TAKIGAMI
  • Patent number: 9903416
    Abstract: An outer ring (31) has a small-diameter step portion (37) comprising a step portion outer peripheral surface (37a) and a step surface (37b), and a engagement groove (37c) is formed in the step portion outer peripheral surface (37a). The inner peripheral surface of a retainer plate (40) is provided with a small-diameter hole portion (41) facing the step portion outer peripheral surface (37a), and a large-diameter hole portion (42) facing the outer peripheral surface (31a) of the outer ring (31) and guiding a rolling bearing (30). The retainer plate (40) is provided with a plurality of engagement claws (49) for locking into the engagement groove (37c), the engagement claws protruding diametrically inward from the inner periphery of the small-diameter hole portion (41), and the retainer plate (40) and the rolling bearing (30) are inseparably assembled by locking the engagement claws (49) into the engagement groove (37c).
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: February 27, 2018
    Assignee: NSK LTD.
    Inventor: Yutaka Ishibashi
  • Publication number: 20170254363
    Abstract: An outer ring (31) has a small-diameter step portion (37) comprising a step portion outer peripheral surface (37a) and a step surface (37b), and a engagement groove (37c) is formed in the step portion outer peripheral surface (37a). The inner peripheral surface of a retainer plate (40) is provided with a small-diameter hole portion (41) facing the step portion outer peripheral surface (37a), and a large-diameter hole portion (42) facing the outer peripheral surface (31a) of the outer ring (31) and guiding a rolling bearing (30). The retainer plate (40) is provided with a plurality of engagement claws (49) for locking into the engagement groove (37c), the engagement claws protruding diametrically inward from the inner periphery of the small-diameter hole portion (41), and the retainer plate (40) and the rolling bearing (30) are inseparably assembled by locking the engagement claws (49) into the engagement groove (37c).
    Type: Application
    Filed: August 19, 2015
    Publication date: September 7, 2017
    Applicant: NSK LTD.
    Inventor: Yutaka ISHIBASHI
  • Publication number: 20170204911
    Abstract: A fixing plate (40) is provided with through holes (45) for reducing the rigidity of the fixing plate (40) between a latch hole (41) and boss parts (42), the through holes being disposed between the latch hole (41) and the boss parts (42) and radially outward from the outer circumferential surface of an outer ring (31).
    Type: Application
    Filed: May 26, 2015
    Publication date: July 20, 2017
    Applicant: NSK LTD.
    Inventor: Yutaka ISHIBASHI
  • Patent number: 9651089
    Abstract: A single-split cage for holding a plurality of rolling elements stably by eliminating the difference in the strength between split regions, by maintaining the strength of the entire cage uniform in the circumferential direction and by maintaining the dimensional accuracy between the split regions constant at the time of molding. A split section for splitting at one portion in the circumferential direction is formed at regions extending between pockets adjacent to each other in the circumferential direction, engagement sections being engageable with each other are provided at the circumferential central position between the pockets and on a one-side split face and the other-side split face formed by splitting the regions. In a state in which both the engagement sections are engaged with each other, predetermined clearances are formed between the one-side split face and the other-side split face and between the engagement sections.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: May 16, 2017
    Assignee: NSK LTD.
    Inventor: Yutaka Ishibashi
  • Patent number: 9651090
    Abstract: A single-split cage for continuously holding a plurality of rolling elements stably for a long time. A split section for splitting at one portion in the circumferential direction is formed at regions extending between pockets adjacent to each other in the circumferential direction, engagement sections being engageable with each other are provided at the circumferential central position between the pockets and on a one-side split face and the other-side split face formed by splitting the regions, and in a state in which both the engagement sections are engaged with each other, predetermined clearances are formed between the one-side split face and the other-side split face and between the engagement sections.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: May 16, 2017
    Assignee: NSK LTD.
    Inventor: Yutaka Ishibashi
  • Patent number: 9644677
    Abstract: The occurrence of wear during use in areas of contact between residual protrusions 22a and opposing end surfaces due to residual protrusions 22a that remain on end surfaces in the circumferential direction of retainer elements 15b after shearing of small cross-sectional area sections is prevented. Convex sections 23, the tip ends thereof being flat, are provided on one end surface in the circumferential direction of retainer elements 15 so as to protrude in the circumferential direction.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: May 9, 2017
    Assignee: NSK Ltd.
    Inventor: Yutaka Ishibashi
  • Publication number: 20170114829
    Abstract: An outer peripheral surface of the small-diameter step portion is formed with an engagement groove extending in a circumferential direction. The retainer plate has a plurality of engagement claws protruding radially inward from an inner periphery of the retainer plate defining the fitting hole and configured to be engaged to the engagement groove. In a state that the fitting hole is fitted to the small-diameter step portion, the engagement claws are formed by axially pressing the inner periphery of the retainer plate, including at least thickness reduction parts formed in advance at a peripheral edge between an inner peripheral surface of the fitting hole and a side surface of the retainer plate, and plastically deforming the inner periphery of the retainer plate so as to protrude radially inward, and the engagement claws are engaged to the engagement groove.
    Type: Application
    Filed: June 11, 2015
    Publication date: April 27, 2017
    Applicant: NSK LTD.
    Inventor: Yutaka ISHIBASHI
  • Patent number: 9382947
    Abstract: In a circumferential end face 22a that is provided so as to face a discontinued portion 12a, portions that are aligned axially with a one-end-side rim portion 8b and an other-end-side rim portion 9b are made as one-end-side bearing surfaces 23a, 23a. In addition, in the other circumferential end face 24a, portions that are aligned axially with the one-end-side rim portion 8b and the other-end-side rim portion 9b are made as other-end-side bearing surfaces 25a, 25a. Then, in circumferential clearances 26 that are present between the circumferential end face 22a and the other circumferential end face 24a, circumferential clearances present between the one-end-side bearing surfaces 23a, 23 and the other-end-side bearing surfaces 25a, 25a are smaller than clearances at the other portions.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: July 5, 2016
    Assignee: NSK LTD.
    Inventor: Yutaka Ishibashi
  • Publication number: 20160025135
    Abstract: Construction of a retainer for a radial needle bearing is achieved that is able to prevent needles 4 from coming out of pockets 5a even before assembling the radial needle bearing, and is able to sufficiently lessen stress concentration due to force being applied to column sections 3a caused by variation in the speed of revolution of the needles 4. The center sections in the axial direction of the columns 3a are located further on the inner-diameter side than the diameter of the pitch circle of the needles 4, and both end sections in the axial direction of the column sections 3a are located further on the outer-diameter side than the diameter of the pitch circle of the needles 4. Thick sections 13 are formed in portions on both end sections in the axial direction of the column sections 3a that are continuous with the pair of rim sections 2a.
    Type: Application
    Filed: February 27, 2014
    Publication date: January 28, 2016
    Inventor: Yutaka Ishibashi
  • Publication number: 20160010689
    Abstract: The occurrence of wear during use in areas of contact between residual protrusions 22a and opposing end surfaces due to residual protrusions 22a that remain on end surfaces in the circumferential direction of retainer elements 15b after shearing of small cross-sectional area sections is prevented. Convex sections 23, the tip ends thereof being flat, are provided on one end surface in the circumferential direction of retainer elements 15 so as to protrude in the circumferential direction.
    Type: Application
    Filed: February 27, 2014
    Publication date: January 14, 2016
    Inventor: Yutaka Ishibashi
  • Patent number: 9145917
    Abstract: A cage 7b for a radial roller bearing is achieved that can be manufactured by axial draw molding, and in which end sections 12c that are provided on both sides of a non-continuous section 11a fit together so that relative displacement in the radial direction is possible, and so that relative displacement in the axial direction is not possible. A fitting section 13a where the end sections 12c, 12d fit together comprises an inside fitting piece 17 that is provided in the middle section in the axial direction of one end section 12c, and a pair of outside fitting pieces 18a, 18b that are provided in separated portions on both sides in the axial direction of the other end section 12d so as to not overlap each other with regard to the axial direction.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: September 29, 2015
    Assignee: NSK Ltd.
    Inventor: Yutaka Ishibashi
  • Publication number: 20150192173
    Abstract: In a circumferential end face 22a that is provided so as to face a discontinued portion 12a, portions that are aligned axially with a one-end-side rim portion 8b and an other-end-side rim portion 9b are made as one-end-side bearing surfaces 23a, 23a. In addition, in the other circumferential end face 24a, portions that are aligned axially with the one-end-side rim portion 8b and the other-end-side rim portion 9b are made as other-end-side bearing surfaces 25a, 25a. Then, in circumferential clearances 26 that are present between the circumferential end face 22a and the other circumferential end face 24a, circumferential clearances present between the one-end-side bearing surfaces 23a, 23 and the other-end-side bearing surfaces 25a, 25a are smaller than clearances at the other portions.
    Type: Application
    Filed: July 12, 2013
    Publication date: July 9, 2015
    Applicant: NSK LTD.
    Inventor: Yutaka Ishibashi
  • Publication number: 20150176646
    Abstract: A cage 7b for a radial roller bearing is achieved that can be manufactured by axial draw molding, and in which end sections 12c that are provided on both sides of a non-continuous section 11a fit together so that relative displacement in the radial direction is possible, and so that relative displacement in the axial direction is not possible. A fitting section 13a where the end sections 12c, 12d fit together comprises an inside fitting piece 17 that is provided in the middle section in the axial direction of one end section 12c, and a pair of outside fitting pieces 18a, 18b that are provided in separated portions on both sides in the axial direction of the other end section 12d so as to not overlap each other with regard to the axial direction.
    Type: Application
    Filed: October 16, 2012
    Publication date: June 25, 2015
    Applicant: NSK Ltd.
    Inventor: Yutaka Ishibashi
  • Publication number: 20150167741
    Abstract: A single-split cage capable of continuously holding a plurality of rolling elements stably for a long time by eliminating the difference in the strength between split regions, by maintaining the strength of the entire cage uniform in the circumferential direction and by maintaining the dimensional accuracy between the split regions constant at the time of molding and also capable of improving load capacity and achieving low cost for assembly.
    Type: Application
    Filed: February 24, 2015
    Publication date: June 18, 2015
    Applicant: NSK LTD.
    Inventor: Yutaka ISHIBASHI
  • Publication number: 20150167739
    Abstract: An engagement portion that brings one circumferential end portion and the other circumferential end portion that are provided so as to face each other across the discontinued portion into engagement with each other so as to prevent an axial relative displacement therebetween is made up of a first recess and projection portion and a second recess and projection portion. In addition, the first recess and projection portion is made up, in turn, of a first engaging projecting portion and a pair of engaging recess portions. On the other hand, the second recess and projection portion is made up, in turn, of a pair of second engaging projecting portions and a second engaging recess portion. Additionally, an engagement portion side pocket is formed in the first engaging projecting portion 17b so as to penetrate this first engaging projecting portion radially.
    Type: Application
    Filed: May 22, 2013
    Publication date: June 18, 2015
    Applicant: NSK LTD.
    Inventor: Yutaka Ishibashi