Patents by Inventor Fumio Ishita

Fumio Ishita 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).

  • Ceramic package and chip resistor, and methods for production of the same
    Patent number: 7098532
    Abstract: A ceramic package and a chip resistor obtained by forming, on a plastic ceramic green sheet comprising 100 parts by weight of a ceramic powder mainly composed of borosilicate glass, into which 10 to 30 parts by weight of an acrylic copolymer obtained by polymerizing 100 parts by weight of a (meth)acrylic acid ester and 1 to 10 parts by weight of a monomer having a functional group of a hydroxyl group, acid amide group, or amino group and having a Tg in the range of ?30° C. to +10° C. is compounded, a conductor layer using a plastic conductive paste obtained by compounding, into 100 parts by weight of a conductive powder, 5 to 20 parts a mixture of an acrylic copolymer having a Tg of not more than ?30° C. and an ethylcellulose-based binder, press forming the resultant single layer of ceramic green sheet, and calcining the resultant ceramic green sheet having the integrally formed bottom, opening and opening circumferential edge and a method for producing the same.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: August 29, 2006
    Assignee: Nippon Carbide Kogyo Kabushiki Kaisha
    Inventors: Junya Naito, Fumio Ishita, Atsushi Shibata, Noboru Yamagata
  • Ceramic package and chip resistor, and method for manufacture thereof
    Publication number: 20050082648
    Abstract: A ceramic package and a chip resistor obtained by forming, on a plastic ceramic green sheet comprising 100 parts by weight of a ceramic powder mainly composed of borosilicate glass, into which 10 to 30 parts by weight of an acrylic copolymer obtained by polymerizing 100 parts by weight of a (meth)acrylic acid ester and 1 to 10 parts by weight of a monomer having a functional group of a hydroxyl group, acid amide group, or amino group and having a Tg in the range of ?30° C. to +10° C. is compounded, a conductor layer using a plastic conductive paste obtained by compounding, into 100 parts by weight of a conductive powder, 5 to 20 parts a mixture of an acrylic copolymer having a Tg of not more than ?30° C. and an ethylcellulose-based binder, press forming the resultant single layer of ceramic green sheet, and calcining the resultant ceramic green sheet having the integrally formed bottom, opening and opening circumferential edge and a method for producing the same.
    Type: Application
    Filed: November 19, 2003
    Publication date: April 21, 2005
    Inventors: Junya Naito, Fumio Ishita, Atsushi Shibata, Noboru Yamagata