Patents by Inventor Yoshio Hayakawa

Yoshio Hayakawa 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: 9487605
    Abstract: Provided is a method for producing a hydrogenated unsaturated polyhydroxyhydrocarbon polymer capable of suppressing side reactions such as a hydrogenolyzis reaction of a terminal hydroxyl group and achieving a high hydrogenation rate in a short reaction time. A hydrogenated unsaturated polyhydroxyhydrocarbon polymer is obtained by a method including: hydrogenating an unsaturated polyhydroxyhydrocarbon polymer under the presence of a hydrogenation catalyst and a reaction solvent in the following two stages (I) and (II): (I) carrying out a hydrogenation reaction in a temperature range of 80° C. to 130° C. until a hydrogenation rate of at least 30 mol % is achieved; and then (II) carrying out a hydrogenation reaction at a temperature higher than 130° C. until a hydrogenation rate of at least 98 mol % is achieved.
    Type: Grant
    Filed: December 25, 2013
    Date of Patent: November 8, 2016
    Assignee: NIPPON SODA CO., LTD.
    Inventors: Hiroki Hashimoto, Yoshio Hayakawa, Mitsuhiro Nakamura
  • Publication number: 20160002375
    Abstract: Provided is a method for producing a hydrogenated unsaturated polyhydroxyhydrocarbon polymer capable of suppressing side reactions such as a hydrogenolysis reaction of a terminal hydroxyl group and achieving a high hydrogenation rate in a short reaction time. A hydrogenated unsaturated polyhydroxyhydrocarbon polymer is obtained by a method including: hydrogenating an unsaturated polyhydroxyhydrocarbon polymer under the presence of a hydrogenation catalyst and a reaction solvent in the following two stages (I) and (II): (I) carrying out a hydrogenation reaction in a temperature range of 80° C. to 130° C. until a hydrogenation rate of at least 30 mol % is achieved; and then (II) carrying out a hydrogenation reaction at a temperature higher than 130° C. until a hydrogenation rate of at least 98 mol % is achieved.
    Type: Application
    Filed: December 25, 2013
    Publication date: January 7, 2016
    Applicant: Nippon Soda Co., Ltd.
    Inventors: Hiroki HASHIMOTO, Yoshio HAYAKAWA, Mitsuhiro NAKAMURA
  • Patent number: 5609787
    Abstract: A method for extinguishing fire uses a gaseous fire-extinguishing agent having as an active component thereof a polyfluoro-tertiary amine represented by the following formula:(CF.sub.3).sub.2 NRfwherein Rf stands for a polyfluoroalkyl group of 1-4 carbon atoms or a polyfluoroalkenyl group of 1-4 carbon atoms.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: March 11, 1997
    Assignee: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Takashi Abe, Haruhiko Fukaya, Eiji Hayashi, Yoshio Hayakawa
  • Patent number: 5486275
    Abstract: A nitrogen-containing perfluoroalkyl bromide, a novel compound to the art, is represented by the formula, ##STR1## wherein Rf.sub.1 and Rf.sub.2 independently stand for a perfluoroalkyl group of one to five carbon atoms, provided that Rf.sub.1 and Rf.sub.2 are 1) separated from each other, 2) directly bonded to each other, 3) bonded to each other through the medium of an oxygen atom, or 4) bonded to each other through the medium of a nitrogen atom. This novel compound is produced by decarbonylating a nitrogen-containing perfluorocarboxylic acid bromide represented by the formula, ##STR2## by exposure to an ultraviolet light.
    Type: Grant
    Filed: August 24, 1994
    Date of Patent: January 23, 1996
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Haruhiko Fukaya, Takashi Abe, Eiji Hayashi, Yoshio Hayakawa, Hajime Baba
  • Patent number: 5476934
    Abstract: A nitrogen-containing perfluoroalkanoyl peroxide is provided which is represented by the formula: ##STR1## wherein Rf.sub.1 and Rf.sub.2 independently stand for an alkyl group of 1 to 5 carbon atoms, provided that Rf.sub.1 and Rf.sub.2 are joined to each other in one of the three patterns of union, 1) direct union, 2) union through the medium of an oxygen atom or 3) union through the medium of a nitrogen atom to form one of the three rings, i.e. five-membered ring, six-membered ring or seven-membered ring.
    Type: Grant
    Filed: August 23, 1994
    Date of Patent: December 19, 1995
    Assignee: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Haruhiko Fukaya, Takashi Abe, Eiji Hayashi, Yoshio Hayakawa
  • Patent number: 5380844
    Abstract: A nitrogen-containing perfluoroalkanoyl peroxide is provided which is represented by the formula: ##STR1## wherein Rf.sub.1 and Rf.sub.2 independently stand for an alkyl group of 1 to 5 carbon atoms, provided that Rf.sub.1 and Rf.sub.2 are joined to each other in one of the three patterns of union, 1) direct union, 2) union through the medium of an oxygen atom or 3) union through the medium of a nitrogen atom to form one of the three rings, i.e. five-membered ring, six-membered ring or seven-membered ring.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: January 10, 1995
    Assignee: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Haruhiko Fukaya, Takashi Abe, Eiji Hayashi, Yoshio Hayakawa
  • Patent number: 5347002
    Abstract: A nitrogen-containing perfluoroalkanoyl peroxide is provided which is represented by the formula: ##STR1## wherein Rf.sub.1 and Rf.sub.2 independently stand for an alkyl group of 1 to 5 carbon atoms, provided that Rf.sub.1 and Rf.sub.2 are joined to each other in one of the three patterns of union, 1) direct union, 2) union through the medium of an oxygen atom or 3) union through the medium of a nitrogen atom to form one of the three rings, i.e. five-membered ring, six-membered ring or seven-membered ring.
    Type: Grant
    Filed: June 21, 1993
    Date of Patent: September 13, 1994
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Haruhiko Fukaya, Takashi Abe, Eiji Hayashi, Yoshio Hayakawa
  • Patent number: 5256825
    Abstract: A nitrogen-containing perfluoroalkanoyl peroxide is provided which is represented by the formula: ##STR1## wherein Rf.sub.1 and Rf.sub.2 independently stand for an alkyl group of 1 to 5 carbon atoms, provided that Rf.sub.1 and Rf.sub.2 are joined to each other in one of the three patterns of union, 1) direct union, 2) union through the medium of an oxygen atom or 3) union through the medium of a nitrogen atom to form one of the three rings, i.e. five membered ring, six-membered ring or seven-membered ring.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: October 26, 1993
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Haruhiko Fukaya, Takashi Abe, Eiji Hayashi, Yoshio Hayakawa
  • Patent number: 5208339
    Abstract: A nitrogen-containing perfluoroalkanoyl peroxide is provided which is represented by the formula: ##STR1## wherein Rf.sub.1 and Rf.sub.2 independently stand for an alkyl group of 1 to 5 carbon atoms, provided that Rf.sub.1 and Rf.sub.2 are joined to each other in one of the three patterns of union, 1) direct union, 2) union through the medium of an oxygen atom or 3) union through the medium of a nitrogen atom to form one of the three rings, i.e. five-membered ring, six-membered ring or seven-membered ring.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: May 4, 1993
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Haruhiko Fukaya, Takashi Abe, Eiji Hayashi, Yoshio Hayakawa
  • Patent number: 4835735
    Abstract: In a card image data processing system wherein a plurality of card images are recognized as one box (2, 2'), the card images are defined by form data common to the box and card data written in fields is defined by field definition information which is of the form data, and the fields are designated for processing contents of the fields, i.e., card data; the card images, including the form data, is displayed in a first window (41, 42) of the display unit, fields of the displayed card images are designated and processing instructions for the card data prepared, and the processing instructions are displayed in an instruction window (43) of the display unit and registered in the instruction code buffer. Processing of the card data of the card images is executed based on the registered processing instructions.
    Type: Grant
    Filed: October 21, 1987
    Date of Patent: May 30, 1989
    Assignee: Fujitsu Limited
    Inventors: Yoshiki Ikegami, Yoshio Hayakawa, Yasuaki Sato
  • Patent number: 4755809
    Abstract: A method for controlling a plurality of windows for displaying card images wherein the card images are arranged lengthwise on a display unit. In the case where there is a window above an active window, there is a cursor displayed in the active window, the cursor is moved up and a down-scrolling operation is performed upon the active window until the first row of a card image reaches the row immediately above the boundary row between the windows. If the cursor is moved further up, the boundary row is moved up. Similarly, in the case where there is a window below an active window, the cursor is moved down and an up-scrolling operation is performed upon the active window until the bottom row of a card image reaches a row immediately below the boundary row. If the cursor is further moved down, the boundary row is moved down.
    Type: Grant
    Filed: October 11, 1983
    Date of Patent: July 5, 1988
    Assignee: Fujitsu Limited
    Inventors: Yoshiki Ikegami, Yoshio Hayakawa
  • Patent number: 4663731
    Abstract: A word processing system for inserting characters into a series of displayed characters within a predetermined field, including a circuit (1008) for moving a series of characters displayed on and after a cursor position to the end portion of the field by pushing an insertion key indicating the insertion of characters, a circuit (1015) for inserting a character into the cursor position and moving the cursor by pushing a character key, and a circuit (1017) for filling the spaces following the inserted characters with the previously moved series of characters.
    Type: Grant
    Filed: January 26, 1984
    Date of Patent: May 5, 1987
    Assignee: Fujitsu Limited
    Inventors: Yoshiki Ikegami, Fumio Matsumoto, Yasuaki Sato, Yoshio Hayakawa