HK

Hiroshi Kawahara

Brother Kogyo: 10 patents #856 of 2,767Top 35%
Nsk: 9 patents #164 of 1,559Top 15%
Tdk: 7 patents #849 of 3,796Top 25%
TA Tdk Electronics Ag: 7 patents #24 of 503Top 5%
GH Gree Holdings: 5 patents #61 of 205Top 30%
TL Toyota Central R&D Labs: 5 patents #200 of 1,657Top 15%
AC Asahi Glass Co.: 4 patents #490 of 2,251Top 25%
GC Goyo Paper Working Co.: 4 patents #3 of 17Top 20%
NC Nihon Dempa Kogyo Co.: 4 patents #88 of 296Top 30%
TO Toyota: 4 patents #6,703 of 26,838Top 25%
NE Nec: 2 patents #5,510 of 14,502Top 40%
MC Mec International Co.: 1 patents #15 of 48Top 35%
DC Diesel Kiki Co.: 1 patents #181 of 366Top 50%
NI Nikon: 1 patents #1,647 of 2,493Top 70%
📍 Fujisawa, JP: #5 of 21 inventorsTop 25%
Overall (All Time): #33,617 of 4,157,543Top 1%
65
Patents All Time

Issued Patents All Time

Showing 26–50 of 65 patents

Patent #TitleCo-InventorsDate
7008682 Optical disc and method for manufacturing the same Narutoshi Fukuzawa, Hiroshi Take 2006-03-07
6852198 Resin composition, water-resistant/moisture-proof paper, containing the same, and process for producing the same Yukinobu Yamazaki, Michinori NAKAMOTO, Hiroshi Okamura, Takeshi Yoshida 2005-02-08
6750592 Surface acoustic wave filter and surface acoustic wave filter apparatus Yoshihiro Takahashi, Tadaaki Tsuda, Yasushi Yamamoto 2004-06-15
6720845 Saw filter device and package for accommodating the same Yoshihiro Takahashi, Tadaaki Tuda, Yasushi Yamamoto 2004-04-13
6605341 Functional film having specific surface dispersion ratio Kiminori Tamai, Tadayoshi Iijima, Yasufumi Takasugi 2003-08-12
6518501 Electronic part and method of assembling the same Minoru Sakai, Yasushi Yamamoto 2003-02-11
6395224 Magnesium alloy and method of producing the same Naohisa Nishino, Yoshihiro Shimizu 2002-05-28
6309699 Method of producing a metallic part exhibiting excellent oxidation resistance Hiroyuki Kawaura, Takashi Saito, Kazuaki Nishino, Nobuhiko Matsumoto, Tadahiko Furuta 2001-10-30
5980659 Surface-treated metallic part and processing method thereof Hiroyuki Kawaura, Kazuaki Nishino, Takashi Saito 1999-11-09
5808833 Magnetic disk apparatus with protective films Toshihiko Motomatsu 1998-09-15
5805380 Overcoat magnetic head slider having overcoat and magnetic disk device Yuji Ishihara, Fujio Maeda 1998-09-08
5532041 Magnetic recording media and method for making them Yoshihiro Honjo, Yoshisuke Yamakawa, Eizo Tsunoda 1996-07-02
5298094 Aluminum alloy casting having high strength and high toughness and process for producing the same Atushi Ota, Minoru Uozumi, Hirokazu Oonishi, Yoji Awano, Yoshihiro Shimizu 1994-03-29
5222431 Electrical stamp device capable of displaying an image layout, and which uses a stencil paper 1993-06-29
5188395 Waterproof recording material having ground patterns and its manufacturing method Noriaki Okunaka, Mitsuru Kobayashi, Isao Tokuno, Shuzo Ohara 1993-02-23
5111237 Image forming apparatus Takemi Yamamoto, Jun Sakai, Shigeyuki Hayashi, Kenji Sakakibara, Michitoshi Akao +2 more 1992-05-05
5089838 Pressure developing device Takemi Yamamoto, Yumio Matsumoto, Shigeyuki Hayashi, Kiyoharu Hayakawa, Osamu Takagi +3 more 1992-02-18
5081484 Image recording medium and detecting device therefor Takashi Nakata, Shunichi Higashiyama, Takashi Tomizawa, Satoru Kuwabara, Jun Sakai +2 more 1992-01-14
5043210 Magnetic recording media having two magnetic layers; the first for recording a baseboard signal and the second for recording a superimposed surface and signal Yoshisuke Yamakawa, Yoshihiro Honjo, Masashi Hayama 1991-08-27
4996552 Image exposure device for exposing photosensitive recording medium to color image lights Kazuo Sangyoji 1991-02-26
4984455 System for detecting speed of engine for vehicle Hiroshi Koyama, Masami Kondo 1991-01-15
4945374 Pressure developing device Takemi Yamamoto, Yumio Matsumoto, Shigeyuki Hayashi, Kiyoharu Hayakawa, Osamu Takagi +3 more 1990-07-31
4937110 Laminated material for hot and cold cups and its manufacturing method Shuzo Ohara, Ryoichi Kitamura, Noriaki Okunaka, Yoshimi Enomoto 1990-06-26
4884501 Pressure developing apparatus Takeshi Izaki 1989-12-05
4855280 Developer sheet Shuzo Ohara 1989-08-08