Patents by Inventor Yo Arita

Yo Arita 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: 8454933
    Abstract: The invention provides a polycrystal magnesium oxide (MgO) sintered body which is capable of having a sintered density close to a theoretical density thereof. The MgO sintered body exhibits excellent mechanical properties and heat conductivity, while reducing contamination of an atmosphere due to gas generation. The invention also provides a production method for the sintered body. The polycrystal MgO sintered body has a unique crystalline anisotropy in which (111) faces are oriented along a surface applied with a uniaxial pressure at a high rate. The polycrystalline MgO sintered body is obtained by a method which includes the steps of: sintering an MgO raw material powder, having a particle size of 1 ?m or less, under a uniaxial pressure and then subjecting the sintered powder to a heat treatment under an atmosphere containing 0.05 volume % or more of oxygen, at a temperature of 1273 K or more for 1 minute or more.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: June 4, 2013
    Assignees: Nippon Tungsten Co., Ltd., Ube Material Industries, Ltd.
    Inventors: Mitsuyoshi Nagano, Masanobu Takasu, Yo Arita, Satoru Sano
  • Publication number: 20100294657
    Abstract: Provided is a polycrystal MgO sintered body which is capable of having a sintered density close to a theoretical density thereof, and exhibiting excellent mechanical properties and heat conductivity, while reducing contamination of an atmosphere due to gas generation, and a production method for the sintered body. The polycrystal MgO sintered body has a unique crystalline anisotropy in which (111) faces are oriented along a surface applied with a uniaxial pressure at a high rate. The polycrystalline MgO sintered body is obtained by a method which comprises the steps of: sintering an MgO raw material powder having a particle size of 1 ?m or less, under a uniaxial pressure; and then subjecting the sintered powder to a heat treatment under an atmosphere containing 0.05 volume % or more of oxygen, at a temperature of 1273 K or more for 1 minute or more.
    Type: Application
    Filed: January 27, 2009
    Publication date: November 25, 2010
    Applicants: NIPPON TUNGSTEN CO., LTD., UBE MATERIAL INDUSTRIES, LTD.
    Inventors: Mitsuyoshi Nagano, Masanobu Takasu, Yo Arita, Satoru Sano
  • Publication number: 20060195959
    Abstract: ‘Kakegawa CE9’ is a new Coleus cultivar particularly distinguished by having a unique leaf color pattern and creeping growth habit.
    Type: Application
    Filed: February 28, 2005
    Publication date: August 31, 2006
    Inventor: Yo Arita
  • Publication number: 20060195961
    Abstract: ‘Kakegawa CE11’ is a new Coleus cultivar particularly distinguished by having a unique leaf shape and color.
    Type: Application
    Filed: February 28, 2005
    Publication date: August 31, 2006
    Inventor: Yo Arita
  • Publication number: 20060195960
    Abstract: ‘Kakegawa CE1O’ is a new Coleus cultivar particularly distinguished by having a unique leaf color pattern and a creeping growth habit.
    Type: Application
    Filed: February 28, 2005
    Publication date: August 31, 2006
    Inventor: Yo Arita
  • Patent number: 4681863
    Abstract: A magnesia-calcia clinker having a high density, said clinker containing MgO, CaO and Fe.sub.2 O.sub.3 as oxides, having the following chemical composition in percent by weightMgO, CaO and Fe.sub.2 O.sub.3 : at least 99% in totalMgO: at least 10%Fe.sub.2 O.sub.3 : 0.2-5%and having a density corresponding to at least 97.5% of the theoretical density. The above magnesia-calcia clinker can be produced by adding a water-soluble iron compound to sea water, bittern or brine, simultaneously with, or after, the addition of the water-soluble iron compound, adding a calcined product of dolomite, lime or a hydrate thereof to form a precipitate composed mainly of magnesium hydroxide, mixing the resulting magnesium hydroxide with a calcium compound, and dead-burning the resulting mixture.
    Type: Grant
    Filed: July 17, 1985
    Date of Patent: July 21, 1987
    Assignee: Ube Chemical Industries Co., Ltd.
    Inventors: Kosei Yamamoto, Akira Kaneyasu, Yo Arita
  • Patent number: PP15827
    Abstract: A new and distinct cultivar of Coleus plant named ‘Kakegawa CE5’, characterized by its low and outwardly spreading plant habit; freely branching and vigorous growth habit; strong lateral branches; and green, dark purple, red purple and pale yellow-colored leaves with pale yellow and red purple-colored petioles.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: July 5, 2005
    Assignee: Sakata Seed Corporation
    Inventor: Yo Arita
  • Patent number: PP17003
    Abstract: ‘Kakegawa CE10’ is a new Coleus cultivar particularly distinguished by having a unique leaf color pattern and a creeping growth habit.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: August 15, 2006
    Assignee: Sakata Seed Corporation
    Inventor: Yo Arita
  • Patent number: PP17004
    Abstract: ‘Kakegawa CE9’ is a new Coleus cultivar particularly distinguished by having a unique leaf color pattern and creeping growth habit.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: August 15, 2006
    Assignee: Sakata Seed Corporation
    Inventor: Yo Arita
  • Patent number: PP17762
    Abstract: ‘Kakegawa CE11’ is a new Coleus cultivar particularly distinguished by having a unique leaf shape and color.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: May 29, 2007
    Assignee: Sakata Seed Corporation
    Inventor: Yo Arita
  • Patent number: PP15341
    Abstract: A new and disctinct cultivar of Coleus plant named ‘Kakegawa CE3’, characterized by its low and outwardly spreading plant habit; freely branching and moderately vigorous growth habit; strong lateral branches; and green, dark purple, red and pale yellow-colored leaves with pale yellow and light red-colored petioles.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: November 16, 2004
    Assignee: Sakata Seed Corp.
    Inventor: Yo Arita
  • Patent number: PP15370
    Abstract: A new and distinct cultivar of Coleus plant named ‘Kakegawa CE1’, characterized by its low and outwardly spreading plant habit; freely branching and moderately vigorous growth habit; strong lateral branches; and green and dark purple bi-colored leaves with dark purple-colored venation and green-colored petioles.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: November 23, 2004
    Assignee: Sakata Seed Corp.
    Inventor: Yo Arita
  • Patent number: PP15371
    Abstract: A new and distinct cultivar of Coleus plant named ‘Kakegawa CE2’, characterized by its low and outwardly spreading plant habit; freely branching and vigorous growth habit; strong lateral branches; and green and dark purple bi-colored leaves with dark purple-colored venation and green-colored petioles.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: November 23, 2004
    Assignee: Sakata Seed Corp.
    Inventor: Yo Arita
  • Patent number: PP15390
    Abstract: A new and distinct cultivar of Coleus plant named ‘Kakegawa CE8’, characterized by its low and outwardly spreading plant habit; freely branching and vigorous growth habit; strong lateral branches; and green and dark purple bi-colored leaves with dark purple-colored venation and purple-colored petioles.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: November 30, 2004
    Assignee: Sakata Seed Corp.
    Inventor: Yo Arita