Patents by Inventor Akihiro Ohyama

Akihiro Ohyama 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).

  • NERVE FASCICLE AND METHOD OF PRODUCING NERVE FASCICLE
    Publication number: 20230364303
    Abstract: [Object] Provided is a method of producing a nerve fascicle including efficiently extending axons of neural cells. [Solution] Neural cells are cultivated in the presence of feeder cells including at least one type of cells selected from the group consisting of vascular component cells, perivascular cells, and oligodendrocytes.
    Type: Application
    Filed: September 17, 2021
    Publication date: November 16, 2023
    Applicant: University of Tsukuba
    Inventors: Hiroshi ISHIKAWA, Aiki MARUSHIMA, Yuji MATSUMARU, Masao KODA, Akira MATSUMURA, Hiroki BUKAWA, Akihiro OHYAMA, Junko TOYOMURA, Miho WATANABE, Tetsuya ABE, Shohei TAKAOKA, Yosuke SHIBAO, Hideaki MATSUMURA
  • NEURAL CELL POPULATION, NEURAL CELL-CONTAINING PREPARATION, AND METHOD FOR PRODUCING SAID POPULATION AND PREPARATION
    Publication number: 20220211764
    Abstract: The present disclosure relates to a neural cell population, a neural cell-containing preparation, and a method for producing the population and preparation. More particularly, the present invention relates to a neural cell population derived from intraoral mesenchymal cells, wherein a proportion of normal diploid cells is 80% or more, a preparation containing the neural cell population, and a method for producing the population and the preparation.
    Type: Application
    Filed: May 14, 2020
    Publication date: July 7, 2022
    Applicant: UNIVERSITY OF TSUKUBA
    Inventors: Aiki MARUSHIMA, Akira MATSUMURA, Hiroki BUKAWA, Masao KODA, Hiroshi ISHIKAWA, Akihiro OHYAMA, Junko TOYOMURA, Yuji MATSUMARU, Hideaki MATSUMURA, Miho WATANABE
  • NERVE BUNDLE AND PRODUCTION METHOD OF NERVE BUNDLE
    Publication number: 20220106561
    Abstract: [Object] Provided is a method of producing a nerve bundle including efficiently extending axons of neural cells. [Solution] Neural cells are cultivated in the presence of feeder cells including at least one type of cells selected from vascular component cells and perivascular cells.
    Type: Application
    Filed: September 17, 2021
    Publication date: April 7, 2022
    Applicant: UNIVERSITY OF TSUKUBA
    Inventors: Aiki MARUSHIMA, Akira MATSUMURA, Hiroki BUKAWA, Yuji MATSUMARU, Masao KODA, Hiroshi ISHIKAWA, Akihiro OHYAMA, Junko TOYOMURA, Shohei TAKAOKA, Yosuke SHIBAO, Miho WATANABE, Tetsuya ABE
  • Spindle motor structure using ceramic ball bearing for hard disk drive
    Patent number: 6342743
    Abstract: A bearing mechanism of the present invention has a first bearing and a second bearing disposed at different positions in an axial direction. Each bearing has an inner race, an outer race, and balls. A shaft holds the inner races of both bearings in an axially separated manner, while a supporting member holds the outer races of both bearings in an axially separated manner. The balls of the bearings have a different coefficient of linear expansion than that of the inner and outer races. The inner and outer races of each of the bearings are fixed in an axially shifted manner, whereby pre-loaded pressures are applied between both the inner race and the balls, and between both the outer race and the balls. As the temperature changes, the supporting member has a compensation member that can change a distance between the outer races in a changing ratio different from a changing ratio of the distance between the inner races.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: January 29, 2002
    Assignee: International Business Machines Corporation
    Inventors: Shinichi Matsuzaki, Akihiro Ohyama, Koichi Takeuchi, Kiyoshi Satoh
  • Spindle motor startup method and apparatus
    Patent number: 6218794
    Abstract: A spindle motor start up method wherein a torque balance between the stator and rotor is broken so as to avoid startup malfunctions, and thereby improve motor startup time in spindle motors prone to startup malfunctions, such as hard disk drive motors having a 4:3 ratio of the number of rotor magnetic poles to the number of stator slots.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: April 17, 2001
    Assignee: International Business Machines Corporation
    Inventors: Yasuhito Shimizu, Naoyuki Kagami, Akira Tokizono, Akihiro Ohyama