Patents by Inventor Hiroaki Hamachi

Hiroaki Hamachi 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: 6633080
    Abstract: A transistor (200) is provided with a semiconductor chip (1) inside a resin package (20). An outer lead (41, 42, 43, 44) is arranged on a first side surface (23) of the resin package (20) to serve as an external drain electrode. A lead frame (5) includes the outer lead (41, 42, 43, 44) and a sheet-like portion (51). The sheet-like portion (51) is connected to a first surface (1a) of the semiconductor chip (1) for holding a drain electrode. An outer lead (45, 46, 47, 48) is arranged on a second side surface (24) of the resin package (20) to serve as an external source electrode. The outer lead (45, 46, 47, 48) is connected by a wire (4) to a second surface (1b) of the semiconductor chip (1) for holding a source electrode. An ejector pin site (22) formed on a top surface (21) of the resin package (20) is located on the side of the first side surface (23).
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: October 14, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Hiroaki Hamachi
  • Publication number: 20030062608
    Abstract: A transistor (200) is provided with a semiconductor chip (1) inside a resin package (20). An outer lead (41, 42, 43, 44) is arranged on a first side surface (23) of the resin package (20) to serve as an external drain electrode. A lead frame (5) includes the outer lead (41, 42, 43, 44) and a sheet-like portion (51). The sheet-like portion (51) is connected to a first surface (1a) of the semiconductor chip (1) for holding a drain electrode. An outer lead (45, 46, 47, 48) is arranged on a second side surface (24) of the resin package (20) to serve as an external source electrode. The outer lead (45, 46, 47, 48) is connected by a wire (4) to a second surface (1b) of the semiconductor chip (1) for holding a source electrode. An ejector pin site (22) formed on a top surface (21) of the resin package (20) is located on the side of the first side surface (23).
    Type: Application
    Filed: March 27, 2002
    Publication date: April 3, 2003
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventor: Hiroaki Hamachi