Patents by Inventor Hiroyuki Tachi

Hiroyuki Tachi 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: 10434495
    Abstract: An object of the present invention is to provide a method for producing water absorbent resin powder in which permeability potential (SFC) is improved while a water absorbing rate (FSR) is being kept. The method is a method for producing water absorbent polyacrylic acid (salt) resin powder including the steps of: (i) polymerizing an acrylic acid (salt) monomer aqueous solution; (ii) during or after the step of (i), performing gel grinding of a hydrogel crosslinked polymer obtained by the polymerization, wherein the hydrogel crosslinked polymer has resin solid content of 10 wt % to 80 wt %, and the gel grinding is carried out with gel grinding energy (GGE) of 18 [J/g] to 60 [J/g]; (iii) drying a particulate hydrogel crosslinked polymer obtained by the gel grinding, wherein the drying is performed at 150° C. to 250° C.; and (iv) carrying out a surface treatment to the particulate hydrogel crosslinked polymer thus dried.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: October 8, 2019
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Sayaka Machida, Kazushi Torii, Yoko Shirai, Hiroyuki Ikeuchi, Shigeru Sakamoto, Koji Tachi, Reiko Nakatsuru
  • Patent number: 5108360
    Abstract: A monitoring system for a medical pump having a reversible operating body for compressing/expanding a space for accommodating a fluid, suction/ejection ports communicating via a no-return valve with this space and units for driving the reversible operating means. The system comprises modules for informing abnormalities in the case of a stoppage for predetermined period at a top or bottom dead center of the reversible operating body, or when this body does not traverse predetermined positions, or when the top or bottom dead center exceeds limit positions, or when a centroidal position of the reversible operating body deviates from a set range, and a module for measuring a flow rate of the blood ejected from the artificial heart by calculating an internal volume of the reversible operating body from the images photographed.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: April 28, 1992
    Assignees: Aisin Seiki Kabushiki Kaisha, Kabushiki Kaisha Shinsangyokaihatsu
    Inventor: Hiroyuki Tachi
  • Patent number: 4809681
    Abstract: A pair of spaced electrodes are disposed inside the thoracic aorta near the heart and are used to sense R- and P-waves in an ECG signal. The electrodes are moved to an ideal intra-aortic position, which is that where R- and P-waves are sensed to have the same magnitude, the P-wave, which occurs earlier than the R-wave, serving as means for accurately predicting the occurrence of the R-wave. The electrodes are affixed to the distal end of an intra-aortic balloon, which is capable of being disposed at the ideal position by monitoring of the R- and P-waves sensed by the electrodes. The balloon is deflated at the occurrence of the R-wave, which has been correctly predicted by the earlier P-wave.
    Type: Grant
    Filed: March 30, 1987
    Date of Patent: March 7, 1989
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Adrian Kantrowitz, Paul S. Freed, Hiroyuki Tachi, Akira Suzuki
  • Patent number: 4775887
    Abstract: An observation apparatus for an artificial organ such as an artificial heart includes a first casing having the artificial heart and a video signal generating and transmitting apparatus therein and a second casing independent and remote from the first casing having a video signal receiving and display apparatus therein.
    Type: Grant
    Filed: February 26, 1987
    Date of Patent: October 4, 1988
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventor: Hiroyuki Tachi
  • Patent number: 4692148
    Abstract: An apparatus and method for placing an aortic balloon catheter is provided wherein a pair of spaced electrodes on the distal end of the catheter assembly are disposed inside a thoracic aorta near a patient's heart and are used to sense R-waves and P-waves in an ECG signal. The electrodes are moved to an ideal intra-aortic position where the R-waves and P-waves are sensed to have the same magnitude. The P-wave, occurring earlier than the R-wave, serves to accurately predict theoccurrence of the R-wave. The balloon of the catheter is deflated upon sensing the R-wave.
    Type: Grant
    Filed: March 28, 1986
    Date of Patent: September 8, 1987
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Adrian Kantrowitz, Paul S. Freed, Hiroyuki Tachi, Akira Suzuki