Patents by Inventor Hitomi Koga

Hitomi Koga 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).

  • Mask ROM and method for manufacturing the same
    Patent number: 6693309
    Abstract: A mask ROM and a method for manufacturing such a mask ROM are provided. Here, the mask ROM can be effective to obtain a product that corresponds to each user's specification, where the same aluminum reticle is used even though each user uses different specification. For manufacturing the mask ROM, one of a first route and a second route is selected. The first route is for providing a second NAND circuit 26 with an input of a pulse obtained by passing a standard pulse 93 from an address transition detecting circuit through a first delay circuit 23 and an input of a fixed potential.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: February 17, 2004
    Assignee: NEC Electronics Corporation
    Inventor: Hitomi Koga
  • Mask ROM and method for manufacturing the same
    Publication number: 20020187620
    Abstract: A mask ROM and a method for manufacturing such a mask ROM are provided. Here, the mask ROM can be effective to obtain a product that corresponds to each user's specification, where the same aluminum reticle is used even though each user uses different specification. For manufacturing the mask ROM, one of a first route and a second route is selected. The first route is for providing a second NAND circuit 26 with an input of a pulse obtained by passing a standard pulse 93 from an address transition detecting circuit through a first delay circuit 23 and an input of a fixed potential.
    Type: Application
    Filed: June 5, 2002
    Publication date: December 12, 2002
    Applicant: NEC CORPORATION
    Inventor: Hitomi Koga