Patents by Inventor Yasuyuki Yanai

Yasuyuki Yanai 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).

  • Organic light emitting element, composition and membrane
    Patent number: 11937495
    Abstract: An organic light-emitting device containing both a compound represented by the following general formula (1) and a compound represented by the following general formula (2) has a high light emission efficiency. The rings a to c each are a benzene ring that can be optionally condensed, R1 and R2 each represent a substituted or unsubstituted aryl group, etc., four of R31 to R35 each are a substituted or unsubstituted carbazol-9-yl group, but all of these four are not the same, and the remaining one is a hydrogen atom, a cyano group, etc.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: March 19, 2024
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, KWANSEI GAKUIN EDUCATIONAL FOUNDATION, KYULUX, INC.
    Inventors: Hajime Nakanotani, Takuji Hatakeyama, Yasuhiro Kondo, Yasuyuki Sasada, Motoki Yanai, Chin-Yiu Chan, Masaki Tanaka, Hiroki Noda, Chihaya Adachi, Yoshitake Suzuki, Naoto Notsuka
  • Fluid control valve and fluid supply/exhaust system
    Patent number: 6394415
    Abstract: A fluid control valve, which can control a fluid having a pressure in the order of 10 kg/cm2, has a response time in the order of several milliseconds can be made small in size, and a fluid supply/exhaust system that provides less gas counter flow in the event of a plurality of valves being used. A fluid control valve of the invention controls a fluid moving in a valve body by closing and opening a portion between a valve seat and a valve holder by use of a drive unit. The drive unit has a rod-shaped shaft for application of pressure through the valve seat and the valve holder, and a member “a” fixed around the rod-shaped shaft. The member “a” is made from a magnetic material, and has a space between it and the shaft. A coil provided in parallel to the shaft, moves the shaft via the member “a” up and down by electromagnetic induction, and makes use of a spring force to close and open a portion between the valve seat and the valve holder.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: May 28, 2002
    Assignees: Fujikin, Inc., Tohoku Steel Co., Ltd.
    Inventors: Tadahiro Ohmi, Migaku Takahashi, Michio Yamaji, Tsuyoshi Tanikawa, Nobukazu Ikeda, Ryosuke Dohi, Kouji Nishino, Naofumi Yasumoto, Hiroyuki Fukuda, Tomio Uno, Yasuyuki Yanai
  • Fluid control valve and fluid supply/exhaust system
    Patent number: 6193212
    Abstract: A fluid control valve, which can control a fluid having a pressure in the order of 10 kg/cm2, has a response time in the order of several milliseconds can be made small in size, and a fluid supply/exhaust system that provides less gas counter flow in the event of a plurality of valves being used. A fluid control valve of the invention controls a fluid moving in a valve body by closing and opening a portion between a valve seat and a valve holder by use of a drive unit. The drive unit has a rod-shaped shaft for application of pressure through the valve seat and the valve holder, and a member “a” fixed around the rod-shaped shaft. The member “a” is made from a magnetic material, and has a space between it and the shaft. A coil provided in parallel to the shaft, moves the shaft via the member “a” up and down by electromagnetic induction, and makes use of a spring force to close and open a portion between the valve seat and the valve holder.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: February 27, 2001
    Assignees: Tohoku Steel Co., Ltd., Fujiken Inc.
    Inventors: Tadahiro Ohmi, Migaku Takahashi, Michio Yamaji, Tsuyoshi Tanikawa, Nobukazu Ikeda, Ryosuke Dohi, Kouji Nishino, Naofumi Yasumoto, Hiroyuki Fukuda, Tomio Uno, Yasuyuki Yanai