HH

Hiroshi Hirayama

HI Hitachi: 46 patents #351 of 28,497Top 2%
TO Toyota: 11 patents #2,600 of 26,838Top 10%
SE Seiko Epson: 8 patents #2,198 of 7,774Top 30%
KM Konica Minolta: 7 patents #495 of 2,718Top 20%
KO Konica Minolta Opto: 7 patents #48 of 418Top 15%
TE Toyo Engineering: 5 patents #22 of 295Top 8%
MI Mitsui Toatsu Chemicals, Incorporated: 5 patents #267 of 1,543Top 20%
HC Hitachi Automotive Engineering Co.: 5 patents #22 of 314Top 8%
NE Nec: 4 patents #3,388 of 14,502Top 25%
NS Nippon Soken: 4 patents #322 of 1,540Top 25%
HC Hitachi Car Engineering Co.: 4 patents #107 of 465Top 25%
Canon: 4 patents #10,118 of 19,416Top 55%
NS National Semiconductor: 3 patents #635 of 2,238Top 30%
HS Hitachi Automotive Systems: 2 patents #689 of 1,636Top 45%
HS Hitachi-Lg Data Storage: 2 patents #125 of 294Top 45%
WI Wako Pure Chemical Industries: 2 patents #86 of 377Top 25%
TL Toyota Central R&D Labs: 2 patents #528 of 1,657Top 35%
Honda Motor Co.: 2 patents #8,527 of 21,052Top 45%
Nissan Motor Co.: 1 patents #4,519 of 8,689Top 55%
OL Olympus: 1 patents #2,078 of 3,097Top 70%
OC Otsuka Pharmaceutical Co.: 1 patents #681 of 1,273Top 55%
Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%
Tdk: 1 patents #2,493 of 3,796Top 70%
TC Tsukishima Kikai Co.: 1 patents #48 of 127Top 40%
FV Fuji Valve: 1 patents #2 of 10Top 20%
KO Konica: 1 patents #1,290 of 1,958Top 70%
DC Dipsol Chemicals Co.: 1 patents #28 of 59Top 50%
DT Daido Tokushuko: 1 patents #152 of 382Top 40%
KT Kabushiki Kaisha Toshiba: 1 patents #13,537 of 21,451Top 65%
NC Nippondenso Co.: 1 patents #1,765 of 3,479Top 55%
Overall (All Time): #12,942 of 4,157,543Top 1%
106
Patents All Time

Issued Patents All Time

Showing 76–100 of 106 patents

Patent #TitleCo-InventorsDate
6154806 Method for recording digital signals on multiple-layered disks Osamu Kawamae, Masayuki Hirabayashi, Yutaka Nagai, Toshifumi Takeuchi 2000-11-28
6147023 Hydrocarbon-adsorbent Takaaki Kanazawa, Kazuhiro Sakurai 2000-11-14
6112173 Pattern recognition device using tree structure data 2000-08-29
6076135 Information medium having a plurality of recording surfaces Osamu Kawamae, Masayuki Hirabayashi, Yutaka Nagai, Toshifumi Takeuchi 2000-06-13
5966721 Digital signal recording method and disk reproducing apparatus Osamu Kawamae, Masayuki Hirabayashi, Yutaka Nagai, Toshifumi Takeuchi 1999-10-12
5958827 Solid solution particle of oxides, a process for producing the same and a catalyst for purifying exhaust gases Akihiko Suda, Hideo Sobukawa, Tadashi Suzuki, Toshio Kandori, Yoshio Ukyo +3 more 1999-09-28
5939628 Thermal type air flow measuring instrument for internal combustion engine Shinya Igarashi, Chihiro Kobayashi, Takayuki Saito, Nobukatsu Arai 1999-08-17
5856917 Electric power device with improved power factor Kenichi Aonuma, Shigetaka Maeyama, Hiromitsu Hirayama, Hiroko Hirayama, heiress, Hisahiko Abe 1999-01-05
5854999 Method and system for speech recognition with compensation for variations in the speech environment 1998-12-29
5812739 Speech recognition system and speech recognition method with reduced response time for recognition 1998-09-22
5795992 Method of testing durability of exhaust gas purification device Toshio Tanahashi, Masakatsu Sanada, Hiroyuki Domyo, Kazuaki Sobue, Tsuneo Higashi +4 more 1998-08-18
5789673 Thermal type air flow measuring instrument for internal combustion engine Shinya Igarashi, Chihiro Kobayashi, Takayuki Saito, Nobukatsu Arai 1998-08-04
5682121 No turn-on pop noise amplifier Toyojiro Naokawa 1997-10-28
5642076 No turn-on pop noise amplifier Toyojiro Naokawa 1997-06-24
5631415 Air flow rate measuring device Shinya Igarashi, Chihiro Kobayashi, Mitsukuni Tsutsui, Yukio Kato 1997-05-20
5582803 Electrically heated catalytic apparatus Kouji Yoshizaki, Takaaki Itou, Tetsuo Nagami, Masakatsu Sanada, Kiyohiko Watanabe +11 more 1996-12-10
5582805 Electrically heated catalytic apparatus Kouji Yoshizaki, Takaaki Itou, Tetsuo Nagami, Masakatsu Sanada, Kiyohiko Watanabe +11 more 1996-12-10
5554342 Electrical heating type catalytic device Kouji Yoshizaki, Kouhei Igarashi, Keiji Ito, Tohru Yoshinaga, Kiyohiko Watanabe +2 more 1996-09-10
5537081 No turn-on pop noise amplifier Toyojiro Naokawa 1996-07-16
5497619 Exhaust gas purification apparatus Jun Yamada, Kenji Kanehara, Toshihiko Igashira, Shingo Morishima, Toshihiro Takada 1996-03-12
5488591 Improved magneto-optical recording apparatus for digital signal information Michio Kobayashi, Satoshi Nebashi 1996-01-30
5467648 Air flow rate measuring device Shinya Igarashi, Chihiro Kobayashi, Mitsukuni Tsutsui, Yukio Kato 1995-11-21
5388403 Exhaust gas purification device for an engine Tetsuo Nagami 1995-02-14
5271906 Exhaust emission control apparatus using catalytic converter with hydrocarbon absorbent Kiyoshi Yuuki, Takehisa Yaegashi 1993-12-21
5064112 Jointing Ti-A1 alloy member and structural steel member Susumu Isobe, Toshiharu Noda 1991-11-12