Patents by Inventor Hideyuki Yunoki

Hideyuki Yunoki 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).

  • Porous sepiolite, process for producing same and adsorptive decomposition catalyst compostion utilizing such porous sepiolite
    Patent number: 5399538
    Abstract: Disclosed is a porous sepiolite having an improved water-resistance and thermal shock resistance obtained by grinding, moisture-conditioning and molding sepiolite, and then calcining said molded sepiolite at a temperature in the range of about 650.degree. C. to about 800.degree. C. Also disclosed is a porous sepiolite having a large specific surface area, wherein the pores having a pore diameter of 50 angstroms or less have a specific surface area in the range of from 40 to 200 m.sup.2 /g and in which no less than 20% of the total surface of the sepiolite is occupied with the pores having a pore diameter of 50 angstroms or less and wherein the pore distribution curve of the sepiolite has a main peak at a pore diameter of no more than 50 angstroms. This sepiolite is obtained by grinding, moisture-conditioning and molding sepiolite, calcining the same at a temperature in the range of about 650.degree. to about 800.degree. C., and then subjecting said calcined sepiolite to an acid treatment.
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: March 21, 1995
    Assignee: Nikki-Universal Co., Ltd.
    Inventors: Norio Inoue, Eiki Iida, Makoto Sakura, Hideyuki Yunoki, Koji Hara, Yoshiki Nakano, Takashi Aihara
  • Production of water resisting, hard, porous metasepiolite
    Patent number: 5397752
    Abstract: Disclosed is a porous sepiolite having an improved water-resistance and thermal shock resistance obtained by grinding, moisture-conditioning and molding sepiolite, and then calcining said molded sepiolite at a temperature in the range of about 650.degree. C. to about 800.degree. C. Also disclosed is a porous sepiolite having a large specific surface area, wherein the pores having a pore diameter of 50 angstroms or less have a specific surface area in the range of from 40 to 200 m.sup.2 /g and in which no less than 20% of the total surface of the sepiolite is occupied with the pores having a pore diameter of 50 angstroms or less and wherein the pore distribution curve of the sepiolite has a main peak at a pore diameter of no more than 50 angstroms. This sepiolite is obtained by grinding, moisture-conditioning and molding sepiolite, calcining the same at a temperature in the range of about 650.degree. to about 800.degree. C., and then subjecting said calcined sepiolite to an acid treatment.
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: March 14, 1995
    Assignee: Nikki-Universal Co., Ltd.
    Inventors: Norio Inoue, Eiki Iida, Makoto Sakura, Hideyuki Yunoki, Koji Hara, Yoshiki Nakano, Takashi Aihara
  • Porous sepiolite, process for producing same and adsorptive decomposition catalyst composition utilizing such porous sepiolite
    Patent number: 5302558
    Abstract: Disclosed is a porous sepiolite having an improved water-resistance and thermal shock resistance obtained by grinding, moisture-conditioning and molding sepiolite, and then calcining said molded sepiolite at a temperature in the range of about 650.degree. C. to about 800.degree. C. Also disclosed is a porous sepiolite having a large specific surface area, wherein the pores having a pore diameter of 50 angstroms or less have a specific surface area in the range of from 40 to 200 m.sup.2 /g and in which no less than 20% of the total surface of the sepiolite is occupied with the pores having a pore diameter of 50 angstroms or less and wherein the pore distribution curve of the sepiolite has a main peak at a pore diameter of no more than 50 angstroms. This sepiolite is obtained by grinding, moisture-conditioning and molding sepiolite, calcining the same at a temperature in the range of about 650.degree. to about 800.degree. C., and then subjecting said calcined sepiolite to an acid treatment.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: April 12, 1994
    Assignee: Nikki-Universal Co., Ltd.
    Inventors: Norio Inoue, Eiki Iida, Makoto Sakura, Hideyuki Yunoki, Koji Hara, Yoshiki Nakano, Takashi Aihara