Patents by Inventor Masaki Fujiyama

Masaki Fujiyama 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: 6585916
    Abstract: An electrically conductive paste which ensures formation of a dense electrode film even in a low-oxygen-concentration atmosphere without strict control of the atmosphere is described. The electrically conductive paste comprising Cu powder, glass frit and an organic binder resin, wherein the glass frit comprises Zn- and Cu-containing borosilicate glass and in the melt state has a contact angle with respect to Cu of 90° or less as measured in a nitrogen atmosphere.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: July 1, 2003
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yukio Sanada, Hiromasa Takahashi, Shinichiro Kuroiwa, Masaki Fujiyama, Kunihiko Hamada, Akira Otani
  • Publication number: 20010001481
    Abstract: An electrically conductive paste which ensures formation of a dense electrode film even in a low-oxygen-concentration atmosphere without strict control of the atmosphere is described. The electrically conductive paste comprising Cu powder, glass frit and an organic binder resin, wherein the glass frit comprises Zn- and Cu-containing borosilicate glass and in the melt state has a contact angle with respect to Cu of 90° or less as measured in a nitrogen atmosphere.
    Type: Application
    Filed: January 10, 2001
    Publication date: May 24, 2001
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Yukio Sanada, Hiromasa Takahashi, Shinichiro Kuroiwa, Masaki Fujiyama, Kunihiko Hamada, Aira Otani
  • Patent number: 6198618
    Abstract: Provided is a conductive paste, including a metal powder, glass frit and SiO2 dispersed in an organic vehicle in which the compounding ratio of SiO2 is in the range of 0.3 to 1.5% by weight. The conductive paste can prevent scattering of a solder plating film formed on a thick film electrode during surface mounting of a ceramic electronic part including a thick film electrode (an external electrode) which is formed by coating the ceramic electronic part with the conductive paste and baking.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: March 6, 2001
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Akira Ohtani, Masaki Fujiyama
  • Patent number: 6197221
    Abstract: An electrically conductive paste which ensures formation of a dense electrode film even in a low-oxygen-concentration atmosphere without strict control of the atmosphere is described. The electrically conductive paste comprising Cu powder, glass frit and an organic binder resin, wherein the glass frit comprises Zn- and Cu-containing borosilicate glass and in the melt state has a contact angle with respect to Cu of 90° or less as measured in a nitrogen atmosphere.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: March 6, 2001
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yukio Sanada, Hiromasa Takahashi, Shinichiro Kuroiwa, Masaki Fujiyama, Kunihiko Hamada, Akira Otani
  • Patent number: 5781402
    Abstract: A conducting thick film composition, a thick film electrode made by sintering this composition, and a ceramic electronic component and a laminated ceramic capacitor in which this thick film electrode is used of which the electrical reliability are improved by the strength of the bond between the ceramic substrate and a thick film electrode being increased by the elimination of blistering and cracking of the electrode during sintering of the composition and the adherence of solder to the electrode being improved by the elimination of glass separation out onto the surface of the electrode during sintering. The conducting thick film composition comprises Cu powder, glass powder and an organic vehicle, the Cu powder comprises spherical powder and scaly powder and the glass powder comprises borosilicate zinc glass and borosilicate barium glass.
    Type: Grant
    Filed: December 26, 1995
    Date of Patent: July 14, 1998
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masaki Fujiyama, Yukio Sanada, Shuji Mushimoto, deceased
  • Patent number: 5536293
    Abstract: A base metal composition for forming an external electrode of a multilayer electronic component contains 70 to 85 percent by weight of Cu, 2 to 10 percent by weight of glass frit and 10 to 28 percent by weight of an organic vehicle. The glass frit contains at least one of lead zinc borosilicate and zinc borosilicate, Ba-Si based glass, and Zn which is in a range of less than 10 percent by weight in terms of ZnO.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: July 16, 1996
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Mika Yamamoto, Masaki Fujiyama, Yukio Sanada, Kunihiko Hamada
  • Patent number: 4202927
    Abstract: This invention relates to a magnetic recording medium comprising a support base having a surface roughness of at most 0.33 micron, a magnetic recording layer having a Young's modulus of at least 5.times.10.sup.10 dyne/cm.sup.2 and being provided on one side of the base and a cationic surface active agent layer provided on the other side of the base in a proportion of 0.2 to 500 mg/m.sup.2.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: May 13, 1980
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobutaka Yamaguchi, Satoru Takayama, Masaki Fujiyama