HD

Hiroyuki Dohi

Pioneer: 10 patents #148 of 1,730Top 9%
TP Tohoku Pioneer: 9 patents #18 of 312Top 6%
Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%
MB Mitsubishi Fuso Truck And Bus: 1 patents #47 of 114Top 45%
Overall (All Time): #404,243 of 4,157,543Top 10%
12
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12063464 Speaker bracket, speaker frame, and speaker Hayami Kondo, Ryu Ito, Shun Shirahata, Masato Tsuruya 2024-08-13
11381893 Speaker bracket, speaker frame, and speaker Hayami Kondo, Ryu Ito, Shun Shirahata, Masato Tsuruya 2022-07-05
11076233 Sound generation device Satoru Hiwatari, Koji Takayama, Hiroyuki Kobayashi 2021-07-27
11070908 Sound generator for mobile entities Satoru Hiwatari, Takayuki NEGISHI, Hiroyuki Kobayashi 2021-07-20
D911155 Bracket for automobile speaker Hayami Kondo, Ryu Ito, Shun Shirahata, Masato Tsuruya 2021-02-23
10277976 Speaker device having diaphragm with folded portion Kenichi Oshima, Koji Takayama, Hirohito Ohno, Hayami Kondo 2019-04-30
10264347 Two-way speaker device having diaphragm of second speaker unit inside voice coil bobbin of first speaker unit Kenichi Oshima, Koji Takayama, Hirohito Ohno, Hayami Kondo 2019-04-16
7379556 Speaker device Koji Maekawa 2008-05-27
7130440 Chair equipped with a speaker Koji Maekawa 2006-10-31
7120271 Internal magnetic circuit and loudspeaker system incorporating the same Hiroyuki Kobayashi, Shouichiro Terauchi, Takashi Ohyaba 2006-10-10
6904996 Truck and transmission gearshift operation device thereof Masayoshi Mita, Tadaharu Suga 2005-06-14
4587569 Printer for printing multi-standard television signals Shunichi Nakamura 1986-05-06