Patents by Inventor Takashi Murai

Takashi Murai 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: 12270853
    Abstract: A semiconductor wafer includes pairs of semiconductor dies having test pads which are electrically coupled to each other to enable testing of pairs of semiconductor dies together at the same time. In this way, even wafers having large numbers of semiconductor dies can be tested with a semiconductor test assembly in a single touch-down test process.
    Type: Grant
    Filed: July 13, 2023
    Date of Patent: April 8, 2025
    Assignee: Sandisk Technologies, Inc.
    Inventors: Toru Miwa, Takashi Murai, Hiroyuki Ogawa, Nisha Padattil Kuliyampattil
  • Publication number: 20250054818
    Abstract: An apparatus includes a semiconductor wafer including a first die and a second die, each including, a selector circuit including a first input terminal coupled to a first die bond pad, a second input terminal, and an output terminal, the selector circuit configured to selectively couple the first input terminal and the second input terminal to the output terminal, a conductor selectively configured to couple the second input terminal to either a first power supply or a second power supply, and an address determined based on a signal value at the output terminal of the selector circuit.
    Type: Application
    Filed: October 29, 2024
    Publication date: February 13, 2025
    Applicant: Sandisk Technologies, Inc.
    Inventors: Akira Ogawa, Takashi Murai
  • Patent number: 12117042
    Abstract: A roller includes chamfered portions and roller inclined surfaces formed on both axial ends of a roller outer circumferential surface. When in a cross section taken along a plane including a rotation axis of the roller and a bearing central axis, an intersection angle between a tangent line of the roller inclined surface at the first position of the roller inclined surface corresponding to an end portion of a guide surface and a perpendicular line of the rotation axis is defined as ?, an intersection angle between a tangent line of the roller inclined surface at the second position corresponding to a boundary between the chamfered portion and the roller inclined surface and a perpendicular line of the rotation axis is defined as ?, and an intersection angle between the guide surface and a perpendicular line of the bearing central axis is defined as ?, ?<?<? is satisfied.
    Type: Grant
    Filed: March 4, 2022
    Date of Patent: October 15, 2024
    Assignee: NSK LTD.
    Inventors: Takashi Murai, Yoshinari Kagota
  • Publication number: 20240209892
    Abstract: A roller includes chamfered portions and roller inclined surfaces formed on both axial ends of a roller outer circumferential surface. When in a cross section taken along a plane including a rotation axis of the roller and a bearing central axis, an intersection angle between a tangent line of the roller inclined surface at the first position of the roller inclined surface corresponding to an end portion of a guide surface and a perpendicular line of the rotation axis is defined as ?, an intersection angle between a tangent line of the roller inclined surface at the second position corresponding to a boundary between the chamfered portion and the roller inclined surface and a perpendicular line of the rotation axis is defined as ?, and an intersection angle between the guide surface and a perpendicular line of the bearing central axis is defined as ?, ?<?<? is satisfied.
    Type: Application
    Filed: March 4, 2022
    Publication date: June 27, 2024
    Applicant: NSK LTD.
    Inventors: Takashi MURAI, Yoshinari KAGOTA
  • Publication number: 20240128132
    Abstract: A semiconductor wafer includes pairs of semiconductor dies having test pads which are electrically coupled to each other to enable testing of pairs of semiconductor dies together at the same time. In this way, even wafers having large numbers of semiconductor dies can be tested with a semiconductor test assembly in a single touch-down test process.
    Type: Application
    Filed: July 13, 2023
    Publication date: April 18, 2024
    Applicant: SanDisk Technologies LLC
    Inventors: Toru Miwa, Takashi Murai, Hiroyuki Ogawa, Nisha Padattil Kuliyampattil
  • Publication number: 20240128134
    Abstract: A semiconductor wafer includes pairs of semiconductor dies having test pads which are electrically coupled to each other to enable testing of pairs of semiconductor dies together at the same time. In this way, even wafers having large numbers of semiconductor dies can be tested with a semiconductor test assembly in a single touch-down test process.
    Type: Application
    Filed: July 13, 2023
    Publication date: April 18, 2024
    Inventors: Toru Miwa, Takashi Murai, Hiroyuki Ogawa
  • Publication number: 20240125846
    Abstract: A semiconductor wafer includes pairs of semiconductor dies having test pads which are electrically coupled to each other to enable testing of pairs of semiconductor dies together at the same time. In this way, even wafers having large numbers of semiconductor dies can be tested with a semiconductor test assembly in a single touch-down test process.
    Type: Application
    Filed: July 13, 2023
    Publication date: April 18, 2024
    Applicant: SanDisk Technologies LLC
    Inventors: Toru Miwa, Takashi Murai, Hiroyuki Ogawa, Nisha Padattil Kuliyampattil
  • Patent number: 11397635
    Abstract: For a non-volatile memory die formed of multiple blocks of memory cells, the memory die has a multi-bit bad block flag for each block stored on the memory die, such as in a fuse ROM. For each block, the multi-bit flag indicates if the block has few defects and is of the highest reliability category, is too defective to be used, or is in of one of multiple recoverability categories. The multi-bit bad blocks values can be determined as part a test process on fresh devices, where the test of a block can be fail stop for critical category errors, but, for recoverable categories, the test continues and tracks the test results to determine a recoverability category for the block and write this onto the die as a bad block flag for each block. These recoverability categories can be incorporated into wear leveling operations.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: July 26, 2022
    Assignee: SanDisk Technologies LLC
    Inventors: Shih-Chung Lee, Takashi Murai, Ken Oowada
  • Publication number: 20210173734
    Abstract: For a non-volatile memory die formed of multiple blocks of memory cells, the memory die has a multi-bit bad block flag for each block stored on the memory die, such as in a fuse ROM. For each block, the multi-bit flag indicates if the block has few defects and is of the highest reliability category, is too defective to be used, or is in of one of multiple recoverability categories. The multi-bit bad blocks values can be determined as part a test process on fresh devices, where the test of a block can be fail stop for critical category errors, but, for recoverable categories, the test continues and tracks the test results to determine a recoverability category for the block and write this onto the die as a bad block flag for each block. These recoverability categories can be incorporated into wear leveling operations.
    Type: Application
    Filed: December 9, 2019
    Publication date: June 10, 2021
    Applicant: SanDisk Technologies LLC
    Inventors: Shih-Chung Lee, Takashi Murai, Ken Oowada
  • Patent number: 9453534
    Abstract: A cage 20 of a tapered roller bearing 1 holds tapered rollers 30 by plural pockets formed between a large-diameter side annular part 22 and a small-diameter side annular part 23 arranged in an axial direction, and plural bar parts 24 which axially join the large-diameter side annular part 22 and the small-diameter side annular part 23 and are circumferentially formed at substantially an equal distance. A value of a ratio of a cross section modulus of the small-diameter side annular part 23 of the cage 20 to a cross section modulus of the large-diameter side annular part 22 of the cage 20 is values from 0.5 to 1.5 (both inclusive).
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: September 27, 2016
    Assignee: NSK LTD.
    Inventors: Satoshi Ushimaru, Takashi Murai
  • Publication number: 20150369289
    Abstract: A cage 20 of a tapered roller bearing 1 holds tapered rollers 30 by plural pockets formed between a large-diameter side annular part 22 and a small-diameter side annular part 23 arranged in an axial direction, and plural bar parts 24 which axially join the large-diameter side annular part 22 and the small-diameter side annular part 23 and are circumferentially formed at substantially an equal distance. A value of a ratio of a cross section modulus of the small-diameter side annular part 23 of the cage 20 to a cross section modulus of the large-diameter side annular part 22 of the cage 20 is values from 0.5 to 1.5 (both inclusive).
    Type: Application
    Filed: January 23, 2014
    Publication date: December 24, 2015
    Applicant: NSK LTD.
    Inventors: Satoshi USHIMARU, Takashi MURAI
  • Patent number: 9210620
    Abstract: When performing a handover of a user equipment, a base station selects one of first and second algorithms based on a handover state of the user equipment. Then, the base station determines a format of a communication channel with the user equipment based on the selected algorithm and quality of communication with the user equipment.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: December 8, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Takashi Murai, Masaru Kabashima
  • Publication number: 20140036867
    Abstract: When performing a handover of a user equipment, a base station selects one of first and second algorithms based on a handover state of the user equipment. Then, the base station determines a format of a communication channel with the user equipment based on the selected algorithm and quality of communication with the user equipment.
    Type: Application
    Filed: June 20, 2013
    Publication date: February 6, 2014
    Inventors: Takashi MURAI, Masaru KABASHIMA
  • Publication number: 20140023893
    Abstract: According to one embodiment, a secondary battery device includes a plurality of secondary battery cells and a resin case including a plurality of wall portions defining a plurality of accommodation sections, which are configured to individually accommodate the secondary battery cells. At least one of the wall portions defining each of the accommodation sections includes a plurality of pressure springs molded integrally with the wall portion from a synthetic resin and configured to press and position each of the secondary battery cells accommodated in the accommodation sections.
    Type: Application
    Filed: September 19, 2013
    Publication date: January 23, 2014
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hideo Shimizu, Noboru Koike, Takashi Murai, Nagaaki Muro, Tadashi Shudo, Nobumitsu Tada
  • Publication number: 20130302663
    Abstract: According to one embodiment provides an assembled battery which comprises electric cells each having a protruding electrode terminal, a bus bar which is connected to the electrode terminal, also electrically connected to the electrode terminal, and comprises an accommodating portion that has an opening and accommodates the electrode terminal along a protruding direction of the protruding portion from the opening, and a protruding portion which is formed on one of a peripheral surface of the electrode terminal along the protruding direction and an inner surface of the accommodating portion along the protruding direction, protrudes toward the other of the peripheral surface and the inner surface, extends in the protruding direction, and comes into contact with the other.
    Type: Application
    Filed: March 15, 2013
    Publication date: November 14, 2013
    Applicant: Kabushiki Kaisha Toshba
    Inventors: Ryuuichi TERAMOTO, Noboru Koike, Yasuyuki Nagase, Hideo Shimizu, Takashi Murai, Takahiro Terada
  • Publication number: 20130244089
    Abstract: According to one embodiment, a secondary battery device includes a secondary battery cell, a case configured to accommodate the secondary battery cell, and foam coating layers sandwiched between an outer surface of the secondary battery cell and an inner surface of the case and configured to hold the secondary battery cell.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 19, 2013
    Inventors: Hideo Shimizu, Noboru Koike, Takashi Murai, Yasuyuki Nagase, Tadashi Shudo, Satoru Nawa, Takashi Kobayashi, Kazuyuki Kuroda
  • Patent number: 8425120
    Abstract: Disclosed herein is an electrolytic erosion preventing insulated rolling bearing and a manufacturing method thereof. In one embodiment, the electrolytic erosion preventing insulated rolling bearing includes an insulating coating being a ceramic coating layer including alumina as the main component and 0.01 to 0.2 percent by weight titanium oxide with the alumina having a particle size ranging from 10 to 50 ?m and average particle size ranging from 15 to 25 ?m.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: April 23, 2013
    Assignee: NSK Ltd.
    Inventors: Katsuhiro Konno, Kenji Kotaki, Takashi Murai, Osamu Fujii, Tetsuo Watanabe, Takayuki Matsushita
  • Patent number: 8165569
    Abstract: The present invention provides a new method for distributing video information to a mobile phone based on push technology where a new function of a mobile phone is utilized sufficiently. In case that a user has registered that the user makes a request for a video information distribution service about a specific area to a user management sever in advance, when a mobile phone of the user exists in the specific area, video information is distributed from a video contents server to the mobile phone of the user based on push technology. Alternatively, when traffic of a radio channel connected to the mobile phone carried by the user is lower than a predetermined threshold, video information is distributed from a video contents server to the mobile phone based on push technology.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: April 24, 2012
    Assignee: Alcatel Lucent
    Inventors: Takashi Murai, Hiroki Hayashi
  • Patent number: 8007184
    Abstract: There is realized a self-aligning roller bearing with retainer that stabilizes the orientation of spherical rollers and prevents these spherical rollers from skewing, and which can be rotated at high speed, and furthermore which enables efficient lubricant feed into pockets 9. By rotating a turning tool 14 as it revolves, the surfaces on both sides in the circumferential direction of respective column sections are processed into concave curved surfaces that oppose a rolling surface of the respective spherical rollers across a pocket clearance into which lubricant oil can be fed. The length of the column sections 8c is less than the length in the axial direction of the spherical rollers, and greater than a half of the length, and an end portion of the side surface in the circumferential direction of the respective column sections 8c projects further in the circumferential direction than an intermediate portion thereof, and the spherical rollers are embraced in the pockets 9.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: August 30, 2011
    Assignee: NSK Ltd.
    Inventors: Takashi Murai, Toshiyuki Tanaka, Masatake Ichimaru
  • Patent number: RE48586
    Abstract: The contact portion of the end face of a conical roller, which is a portion to be slidingly contacted with a collar portion, is ground such that the outer contour line of the section thereof has a continuously curved line which passes through at least not only the first point but also between the third position and fourth position.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: June 8, 2021
    Assignee: NSK LTD.
    Inventors: Takashi Murai, Shinichi Tsunashima, Osamu Fujii