Patents by Inventor Mitsuhiro Kosai

Mitsuhiro Kosai 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).

  • Lead-free solder alloy
    Patent number: 9844837
    Abstract: By using a solder alloy consisting essentially of 0.2-1.2 mass % of Ag, 0.6-0.9 mass % of Cu, 1.2-3.0 mass % of Bi, 0.02-1.0 mass % of Sb, 0.01-2.0 mass % of In, and a remainder of Sn, it is possible to obtain portable devices having excellent resistance to drop impact and excellent heat cycle properties without developing thermal fatigue even when used in a high-temperature environment such as inside a vehicle heated by the sun or in a low-temperature environment such as outdoors in snowy weather.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: December 19, 2017
    Assignee: Senju Metal Industry Co., Ltd.
    Inventors: Masato Shimamura, Tsukasa Ohnishi, Mitsuhiro Kosai, Kazuyori Takagi, Tomoko Nonaka, Masayuki Suzuki, Toru Hayashida, Seiko Ishibashi, Shunsaku Yoshikawa, Yoshie Yamanaka
  • Lead-Free Solder Alloy
    Publication number: 20140141273
    Abstract: By using a solder alloy consisting essentially of 0.2-1.2 mass % of Ag, 0.6-0.9 mass % of Cu, 1.2-3.0 mass % of Bi, 0.02-1.0 mass % of Sb, 0.01-2.0 mass % of In, and a remainder of Sn, it is possible to obtain portable devices having excellent resistance to drop impact and excellent heat cycle properties without developing thermal fatigue even when used in a high-temperature environment such as inside a vehicle heated by the sun or in a low-temperature environment such as outdoors in snowy weather.
    Type: Application
    Filed: March 23, 2012
    Publication date: May 22, 2014
    Applicant: SENJU METAL INDUSTRY CO., LTD.
    Inventors: Masato Shimamura, Tsukasa Ohnishi, Mitsuhiro Kosai, Kazuyori Takagi, Tomoko Nonaka, Masayuki Suzuki, Toru Hayashida, Seiko Ishibashi, Shunsaku Yoshikawa, Yoshie Yamanaka