Patents by Inventor Koichi Umezawa

Koichi Umezawa 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: 5819185
    Abstract: A portable satellite communication apparatus constituted by a body portion and an antenna portion, wherein the antenna portion is attached on an azimuth angle adjustor provided on the body portion so that the upper surface of the antenna portion is made to be the transmission/reception direction of radio waves and the antenna portion is made rotatable so as to act also as a cover for covering the body portion. The antenna portion can be adjusted with respect to its azimuth angle, elevation angle and polarization angle. A panel portion and a handling instruction indicating portion are provided on the upper surface of the body portion and a lamp is provided on the antenna support portion so as to illuminate the panel portion and the handling instruction indicating portion to facilitate the handling of the apparatus in the night or the like.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: October 6, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Koichi Umezawa, Takashi Ohwada, Shiro Fujimori, Shiho Nakagawa, Minako Sasahara, Tohru Higashihara
  • Patent number: 5491507
    Abstract: A handy type video telephone equipment which permits a user to transmit and receive pictures and speech with a casing held in one hand. A speaker is arranged at the upper end part of the front of the casing which is thin and vertically long, while a microphone is arranged at the lower end part thereof. A display panel and a control panel are interposed between the speaker and the microphone. A camera is mounted on the casing so as to be capable of altering its angle. The speaker is detachably mounted, and it is usable as an earphone when detached. The user's movements are not hampered during the transmission and reception, and the equipment can assume various communication or service attitudes conforming to the contents of information for the communications.
    Type: Grant
    Filed: October 22, 1993
    Date of Patent: February 13, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Koichi Umezawa, Hiroyuki Kuriyama, Takanori Nishiyama, Kiyoshi Ishida, Iwao Ishinabe