Patents by Inventor Naohiro KUNISAWA

Naohiro KUNISAWA 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).

  • WORK IMPLEMENT OF HYDRAULIC EXCAVATOR AND METHOD OF MANUFACTURING WORK IMPLEMENT OF HYDRAULIC EXCAVATOR
    Publication number: 20190112779
    Abstract: The number of steps required for a welding operation of a work implement of a hydraulic excavator is reduced while the welding quality is improved. A boom includes a top plate, a left side plate joined to the top plate, and a boom foot bracket. The boom foot bracket includes an extending portion. The extending portion includes a portion that faces a side surface of the top plate.
    Type: Application
    Filed: June 15, 2017
    Publication date: April 18, 2019
    Applicant: KOMATSU LTD.
    Inventors: Shinpei UTOU, Tsuyoshi ASADA, Nobuyasu SUGIHARA, Naohiro KUNISAWA, Yuki NAKATANI, Masashi UENO