Patents by Inventor Katsuaki Sasaki

Katsuaki Sasaki 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: 12230715
    Abstract: A change in electrical characteristics of a semiconductor device including an interlayer insulating film over a transistor including an oxide semiconductor as a semiconductor film is suppressed. The structure includes a first insulating film which includes a void portion in a step region formed by a source electrode and a drain electrode over the semiconductor film and contains silicon oxide as a component, and a second insulating film containing silicon nitride, which is provided in contact with the first insulating film to cover the void portion in the first insulating film. The structure can prevent the void portion generated in the first insulating film from expanding outward.
    Type: Grant
    Filed: March 11, 2024
    Date of Patent: February 18, 2025
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Junichi Koezuka, Toshinari Sasaki, Katsuaki Tochibayashi, Shunpei Yamazaki
  • Publication number: 20250035153
    Abstract: A ball bearing includes a cage circular annular portion and a seal member. The cage circular annular portion has a cage-side sliding contact surface axially opposed to the seal member and configured to come into sliding contact with the seal member. The seal member has a seal-side sliding contact surface configured to come into sliding contact with the cage-side sliding contact surface. A plurality of axial protrusions each having an axially convex circular arc shape in cross sections along a circumferential direction are formed on one of the cage-side sliding contact surface and the seal-side sliding contact surface at constant pitches in the circumferential direction.
    Type: Application
    Filed: October 11, 2024
    Publication date: January 30, 2025
    Applicant: NTN CORPORATION
    Inventors: Katsuaki Sasaki, Susumu Miyairi
  • Publication number: 20250027539
    Abstract: An outer surface rubber portion is formed to cover the entire axially outer surface of a metal core. An inner surface rubber portion is formed with a circular annular opening through which the axially inner surface of the metal core is exposed on the same circumference passing on the radially outer side of minute protrusions; and circular arc-shaped openings through which the axially inner surface of the metal core is exposed on the same circumference passing on the radially inner side of the minute protrusions.
    Type: Application
    Filed: November 21, 2022
    Publication date: January 23, 2025
    Applicant: NTN CORPORATION
    Inventors: Katsuaki SASAKI, Susumu MIYAIRI, Masato AKAHORI
  • Patent number: 12146524
    Abstract: A ball bearing is provided which includes a cage circular annular portion and a seal member. The cage circular annular portion has a cage-side sliding contact surface axially opposed to the seal member and configured to come into sliding contact with the seal member. The seal member has a seal-side sliding contact surface configured to come into sliding contact with the cage-side sliding contact surface. A plurality of axial protrusions each having an axially convex circular arc shape in cross sections along a circumferential direction are formed on one of the cage-side sliding contact surface and the seal-side sliding contact surface at constant pitches in the circumferential direction.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: November 19, 2024
    Assignee: NTN CORPORATION
    Inventors: Katsuaki Sasaki, Susumu Miyairi
  • Publication number: 20230296132
    Abstract: A ball bearing is provided which includes a cage circular annular portion and a seal member. The cage circular annular portion has a cage-side sliding contact surface axially opposed to the seal member and configured to come into sliding contact with the seal member. The seal member has a seal-side sliding contact surface configured to come into sliding contact with the cage-side sliding contact surface. A plurality of axial protrusions each having an axially convex circular arc shape in cross sections along a circumferential direction are formed on one of the cage-side sliding contact surface and the seal-side sliding contact surface at constant pitches in the circumferential direction.
    Type: Application
    Filed: August 6, 2021
    Publication date: September 21, 2023
    Applicant: NTN CORPORATION
    Inventors: Katsuaki SASAKI, Susumu MIYAIRI
  • Publication number: 20220373429
    Abstract: An evaluation test method for flaking caused by hydrogen embrittlement includes: preparing a rolling bearing having a first bearing ring, a second bearing ring, and a rolling element, the first bearing ring being a rotation ring including a first raceway surface, the second bearing ring being a stationary ring including a second raceway surface facing the first raceway surface, the rolling element being disposed between the first raceway surface and the second raceway surface; and applying a rotation around a central axis onto the first bearing ring in a state in which a load is applied between the first raceway surface and the second raceway surface through the rolling element. Each of the first bearing ring, the second bearing ring, and the rolling element is composed of a steel. The first raceway surface and the second raceway surface are always entirely immersed in lubricating oil during the rotation.
    Type: Application
    Filed: September 28, 2020
    Publication date: November 24, 2022
    Inventors: Katsuaki SASAKI, Toru YAMAGUCHI
  • Patent number: 11440226
    Abstract: The rolling bearing seal includes a core metal and rubber adhered to the core metal by vulcanization. The rubber includes: a seal lip portion having, over the entire circumference in the circumferential direction, a plurality of projections that extend inward in the radial direction from the inner diameter side of the core metal, and slides on a seal sliding surface of an inner ring of a rolling bearing; and an attachment portion that is attached to an outer ring of the rolling bearing. A compression vulcanization molding mold includes a female mold and a male mold. The female mold has a guide portion for positioning the core metal and a rugged shape forming the projections on the seal lip portion. The male mold has an inner-diameter-side burr groove and an outer-diameter-side burr groove and the shape of a radially outermost portion of the inner-diameter-side burr groove is formed in a circle.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: September 13, 2022
    Assignees: NTN CORPORATION, NAKANISHI METAL WORKS CO., LTD.
    Inventors: Katsuaki Sasaki, Takahiro Wakuda, Takashi Kaneike
  • Patent number: 11390302
    Abstract: A vehicle control device includes: a driving controller configured to perform first driving control such that one or both of an acceleration or deceleration speed and steering of a vehicle is controlled to travel the vehicle; an occupant intention detector configured to detect an intention of the occupant to switch from manual driving to a state in which the driving controller performs the first driving control; and a one-way traffic determiner configured to determine whether a road on which the vehicle is predicted to be traveling or travel in future is a one-way traffic road. The driving controller determines whether to start the first driving control based on whether the one-way traffic determiner determines the road on which the vehicle is predicted to be traveling or travel in future is the one-way traffic road.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: July 19, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Akihiro Toda, Yugo Ueda, Katsuaki Sasaki, Atsushi Arai
  • Patent number: 11390275
    Abstract: A vehicle control device includes a pedestrian recognizer configured to recognize a pedestrian present in the periphery of a vehicle, and a driving controller configured to decelerate at least the vehicle irrespective of an occupant's operation of the vehicle in accordance with the vehicle and a pedestrian approaching each other, and delays a timing at which the vehicle is stopped in a case where a plurality of pedestrians recognized by the pedestrian recognizer are present on a traveling route of the vehicle.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: July 19, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yugo Ueda, Akihiro Toda, Katsuaki Sasaki, Yuki Motegi
  • Patent number: 10871191
    Abstract: A rolling bearing including a cage is provided. The cage includes, on its outer peripheral surface, a plurality of ridges protruding radially outwardly, and circumferentially spaced apart from each other. The ridges extend in the axial direction or in an oblique direction or directions relative to the circumferential direction. The ridges are capable of coming into contact with the inner peripheral surface of the outer ring through lubricating oil.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: December 22, 2020
    Assignee: NTN CORPORATION
    Inventor: Katsuaki Sasaki
  • Publication number: 20200231144
    Abstract: A vehicle control device includes a pedestrian recognizer configured to recognize a pedestrian present in the periphery of a vehicle, and a driving controller configured to decelerate at least the vehicle irrespective of an occupant's operation of the vehicle in accordance with the vehicle and a pedestrian approaching each other, and delays a timing at which the vehicle is stopped in a case where a plurality of pedestrians recognized by the pedestrian recognizer are present on a traveling route of the vehicle.
    Type: Application
    Filed: September 29, 2017
    Publication date: July 23, 2020
    Inventors: Yugo Ueda, Akihiro Toda, Katsuaki Sasaki, Yuki Motegi
  • Publication number: 20200223452
    Abstract: A vehicle control device includes: a driving controller configured to perform first driving control such that one or both of an acceleration or deceleration speed and steering of a vehicle is controlled to travel the vehicle; an occupant intention detector configured to detect an intention of the occupant to switch from manual driving to a state in which the driving controller performs the first driving control; and a one-way traffic determiner configured to determine whether a road on which the vehicle is predicted to be traveling or travel in future is a one-way traffic road. The driving controller determines whether to start the first driving control based on whether the one-way traffic determiner determines the road on which the vehicle is predicted to be traveling or travel in future is the one-way traffic road.
    Type: Application
    Filed: October 2, 2017
    Publication date: July 16, 2020
    Inventors: Akihiro Toda, Yugo Ueda, Katsuaki Sasaki, Atsushi Arai
  • Patent number: 10570962
    Abstract: A sealed bearing includes an inner race; and seal members each including a seal lip made of rubber. Each seal lip includes a plurality of protrusions circumferentially spaced apart from each other, and kept in sliding contact with the inner race with fluid lubrication condition generated between the protrusions and the inner race. Each protrusion has a circular arc-shaped cross section along the circumferential direction, and the circular arc-shaped cross section has a radius of 0.4 mm or more and less than 9.0 mm.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: February 25, 2020
    Assignee: NTN CORPORATION
    Inventors: Katsuaki Sasaki, Tomohiro Sugai, Takahiro Wakuda
  • Publication number: 20200011378
    Abstract: A rolling bearing including a cage is provided. The cage includes, on its outer peripheral surface, a plurality of ridges protruding radially outwardly, and circumferentially spaced apart from each other. The ridges extend in the axial direction or in an oblique direction or directions relative to the circumferential direction. The ridges are capable of coming into contact with the inner peripheral surface of the outer ring through lubricating oil.
    Type: Application
    Filed: March 1, 2018
    Publication date: January 9, 2020
    Applicant: NTN CORPORATION
    Inventor: Katsuaki SASAKI
  • Publication number: 20190351590
    Abstract: The rolling bearing seal includes a core metal and rubber adhered to the core metal by vulcanization. The rubber includes: a seal lip portion having, over the entire circumference in the circumferential direction, a plurality of projections that extend inward in the radial direction from the inner diameter side of the core metal, and slides on a seal sliding surface of an inner ring of a rolling bearing; and an attachment portion that is attached to an outer ring of the rolling bearing. A compression vulcanization molding mold includes a female mold and a male mold. The female mold has a guide portion for positioning the core metal and a rugged shape forming the projections on the seal lip portion. The male mold has an inner-diameter-side burr groove and an outer-diameter-side burr groove and the shape of a radially outermost portion of the inner-diameter-side burr groove is formed in a circle.
    Type: Application
    Filed: October 17, 2017
    Publication date: November 21, 2019
    Applicants: NTN CORPORATION, NAKANISHI METAL WORKS CO., LTD.
    Inventors: Katsuaki SASAKI, Takahiro WAKUDA, Takashi KANEIKE
  • Publication number: 20190219102
    Abstract: A sealed bearing includes an inner race; and seal members each including a seal lip made of rubber. Each seal lip includes a plurality of protrusions circumferentially spaced apart from each other, and kept in sliding contact with the inner race with fluid lubrication condition generated between the protrusions and the inner race. Each protrusion has a circular arc-shaped cross section along the circumferential direction, and the circular arc-shaped cross section has a radius of 0.4 mm or more and less than 9.0 mm.
    Type: Application
    Filed: September 5, 2017
    Publication date: July 18, 2019
    Applicant: NTN CORPORATION
    Inventors: Katsuaki SASAKI, Tomohiro SUGAI, Takahiro WAKUDA
  • Publication number: 20190095724
    Abstract: A surroundings monitoring device includes a median strip determination unit that determines whether or not there is a median strip in a road around a vehicle, and a progression direction estimation unit that estimates that a plurality of lanes in front of the median strip in a case that viewed from the vehicle among lanes included in a crossroad crossing a road on which the vehicle is traveling are lanes in the same progression direction in a case that the vehicle reaches the crossroad and the median strip determination unit determines that there is the median strip in the crossroad.
    Type: Application
    Filed: September 20, 2018
    Publication date: March 28, 2019
    Inventors: Yugo Ueda, Katsuaki Sasaki, Akihiro Toda
  • Publication number: 20190094881
    Abstract: A vehicle control device includes an other-vehicle recognition unit that recognizes another vehicle stopped near a subject vehicle, a specific-vehicle determination unit that determines whether or not the other vehicle recognized by the other-vehicle recognition unit is a specific vehicle of which a main parking place is the place at which the other vehicle is stopped, and a driving control unit that controls one or both of steering and acceleration/deceleration of the subject vehicle to cause the subject vehicle to travel regardless of an operation of an occupant of the subject vehicle, the driving control unit suppressing, with respect to the other vehicle determined to be the specific vehicle by the specific-vehicle determination unit among the other vehicles recognized by the other-vehicle recognition unit, travel control of the subject vehicle with respect to start of the other vehicle as compared with the other vehicle not determined to be the specific vehicle by the specific-vehicle determination unit.
    Type: Application
    Filed: September 19, 2018
    Publication date: March 28, 2019
    Inventors: Katsuaki Sasaki, Akihiro Toda, Yugo Ueda, Atsushi Arai, Yuki Motegi
  • Patent number: 10190637
    Abstract: A sealed bearing assembly includes seal members each including a seal lip with multiple protrusions, and being arranged such that oil passages are defined between the seal lip and a seal sliding surface which is configured to slide circumferentially relative to the protrusions such that the oil passages communicate with a bearing internal space and an exterior of the bearing, and prevent passage of foreign objects having particle diameters larger than a predetermined value therethrough. The seal lip and the seal sliding surface are arranged such that, when the bearing rotates, lubricating oil in the oil passages is pulled into spaces between the seal lip and the seal sliding surface such that a fluid lubricating condition is created between the seal lip and the seal sliding surface, due to a wedge effect.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: January 29, 2019
    Assignee: NTN CORPORATION
    Inventors: Kazunori Inamasu, Yugo Yoshimura, Takahiro Wakuda, Katsuaki Sasaki
  • Publication number: 20180187722
    Abstract: Provided is a retainer (7), including a pair of annular members (8, 8), the pair of annular members (8, 8) being coupled to each other so that semispherical bulging portions (9, 9) which are opposed to each other form pockets (11) configured to retain balls (6). The pockets (11) each include a ball-opposed surface (12) having a ball non-contact portion (14) that is recessed toward a side opposite to the ball side. The ball non-contact portion (14) is formed outside a predetermined region (A) of the ball-opposed surface (12), which includes an intersection (P) of a pitch circle (PCD) of the balls (6) and a straight line (L) extending in a radial direction through a central portion of the ball-opposed surface (12) in a circumferential direction, and has an end portion on a radially outer side which is opened in a radially outer surface (8a) of the annular member (8).
    Type: Application
    Filed: June 2, 2016
    Publication date: July 5, 2018
    Inventor: Katsuaki SASAKI