1
Yoshimi Egashira: Antenna for a portable radiotelephone. Harada Kogyo Kabushiki Kaisha, Koda & Androlia, December 26, 1989: US04890114 (104 worldwide citation)

An antenna for portable radiotelephones including an antenna element and antenna holder. The antenna element is covered by a non-conductive cover except for the tip and base ends which respectively have a cap and a sleeve, both made of conductive materials thereon. The antenna holder is made of cond ...


2
Takuji Harada: Cable TV system for guest facilities. Harada Kogyo Kabushiki Kaisha, Koda and Androlia, January 31, 1989: US04802022 (48 worldwide citation)

A CATV system for a guest facility such as a hotel including a monitor installed in each room of the facility, an activator for activating the monitor with a signal sent from the front office of the facility, a sensor for detecting a guest who has entered the room and comes close to the monitor, and ...


3
Kazuhiko Nakase: Flat-plate antenna for use in mobile communications. Harada Kogyo Kabushiki Kaisha, Koda and Androlia, October 29, 1991: US05061939 (40 worldwide citation)

A flat-plate antenna for use in mobile communications including a ground plate, a table-shape frame made up with a conductive top plate and connecting members which electrically connect the top plate to the ground plate, a capacitor electrode installed between the top plate and ground plate so as to ...


4
Yoshimi Egashira: Shortened non-grounded type ultrashort-wave antenna. Harada Kogyo Kabushiki Kaisha, Koda and Androlia, November 16, 1993: US05262792 (38 worldwide citation)

A shortened non-grounded type ultrashort antenna including an antenna element, an electrostatic coupling element electrostatically coupled to the antenna element, a rectangular first metal member with one end thereof connected to the electrostatic coupling element and an other end thereof extending ...


5
Yoshimi Egashira: Antenna for a portable radiotelephone. Harada Kogyo Kabushiki Kaisha, Koda and Androlia, August 22, 1989: US04860024 (37 worldwide citation)

An improved transmitting and receiving antenna for a portable radiotelephone with an antenna element which can be accommodated inside of the case of the portable radiotelephone, compensating for the drop in reception sensitivity that occurs when the antenna element is located inside of the case. The ...


6
Takuji Harada: Transmission channel coupler for antenna. Harada Kogyo Kabushiki Kaisha, Koda and Androlia, November 4, 1986: US04621243 (37 worldwide citation)

A transmission channel coupler for an antenna including two resonators, each resonator being formed with a helical conductor and an outer conductor which is disposed outside of the helical conductor by sharing the same axis with the helical conductor. One end of the helical conductor is electrically ...


7
Jiro Harada: Drive control device for an electrically-driven extending and retracting antenna. Harada Kogyo Kabushiki Kaisha, Koda and Androlia, October 17, 1989: US04875053 (33 worldwide citation)

A drive control device for an electrically-driven extending and retracting antenna such as an antenna on an automobile including a motor-driven rotary plate which makes approximately one revolution during the time for complete extension or retraction and has attached, on one side, a disk-shaped cond ...


8
Yoshimi Egashira: Antenna for a portable radiotelephone. Harada Kogyo Kabushiki Kaisha, Koda and Androlia, August 29, 1989: US04862182 (31 worldwide citation)

An antenna system for a portable radiotelephone which does not require an expensive mechanical and bulky change-over switch to switch between the transmitting and receiving main antenna element and the call signal-receiving sub-antenna element. This is accomplished by a rod-shaped transmitting and r ...


9
Kazuhiko Nakase, Yoshima Egashira: Three-wave antenna for vehicle. Harada Kogyo Kabushiki Kaisha, Koda and Androlia, March 29, 1988: US04734703 (26 worldwide citation)

A three-wave common antenna for AM/FM and ultra high frequency waves combined in a single unit and mounted on vehicles including AM/FM antenna element mounted on a vehicle body at its base, a non-grounded type ultra high frequency antenna element disposed on top of the AM/FM antenna element such tha ...


10
Yoshimi Egashira, Moriyoshi Kawasaki: Method of manufacturing a helical antenna for satellite communication. Harada Kogyo Kabushiki Kaisha, Koda and Androlia, April 18, 1995: US05406693 (25 worldwide citation)

[Object] To provide a method of manufacturing a helical antenna for satellite communications which has no local bent, etc. in the completed helical coil even though the conductor wire used is of an extremely pliable material, so that a high-quality helical antenna for use in satellite communications ...