Issued Patents All Time
Showing 1–25 of 69 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10011890 | Sodium tungstate production method | Takeshi Itakura, Akihiko Ikegaya | 2018-07-03 |
| 9512504 | Method for producing sodium tungstate, method for collecting tungsten, apparatus for producing sodium tungstate, and method for producing sodium tungstate aqueous solution | Kazuo Sasaya, Takayuki Fudo, Akira Nakano, Syunsuke Yamanaka, Takahisa Iguchi +2 more | 2016-12-06 |
| 9502201 | Tungsten electrode material and thermionic emission current measuring device | Seiji Nakabayashi, Masahiro Katoh, Toshihiko Yoshida, Norihiko Hasegawa | 2016-11-22 |
| 9249479 | Method for producing sodium tungstate, method for collecting tungsten, apparatus for producing sodium tungstate, and method for producing sodium tungstate aqueous solution | Kazuo Sasaya, Takayuki Fudo, Akira Nakano, Syunsuke Yamanaka, Takahisa Iguchi +2 more | 2016-02-02 |
| 8974674 | Method for producing ammonium tungstate aqueous solution | Hideaki Ito, Takeshi Itakura, Kazuo Sasaya, Takuya Okuno, Fumiatsu Sato +2 more | 2015-03-10 |
| 8926531 | Fatigue estimation device and electronic apparatus having the fatigue estimation device mounted thereon | Motoki Sone, Katsuya Nakagawa, Zbigniew Struzik, Toru Nakamura | 2015-01-06 |
| 8801816 | Cemented carbide and cutting tool using same | Takuya Okuno, Kazuhiro Hirose, Hideki Moriguchi, Akihiko Ikegaya, Kazuo Sasaya | 2014-08-12 |
| 8632747 | Method for producing sodium tungstate, method for collecting tungsten, apparatus for producing sodium tungstate, and method for producing sodium tungstate aqueous solution | Kazuo Sasaya, Takayuki Fudo, Akira Nakano, Syunsuke Yamanaka, Takahisa Iguchi +2 more | 2014-01-21 |
| 8419955 | Antireflection structure, lens barrel including antireflection structure, method for manufacturing antireflection structure | Kenichi Ikeda, Yoshiki Hayashida | 2013-04-16 |
| 8113871 | Connector assembly | Nobuhisa Todo, Akira Ohno, Yuji Hamaoka | 2012-02-14 |
| 8025273 | Liquid-filled anti-vibration mounting device | Minoru Katayama, Katsutoshi Ohta, Sumio Uchida | 2011-09-27 |
| 7850319 | Light-absorbing member | Motonobu Yoshikawa, Michihiro Yamagata, Yasuhiro Tanaka | 2010-12-14 |
| 7787184 | Member having antireflection structure | Motonobu Yoshikawa, Keiki Yoshitsugu, Hiroaki Okayama, Kazutake Boku | 2010-08-31 |
| 7483086 | Illumination optical system, projection video system using the same, and integral-type video display | Motonobu Yoshikawa | 2009-01-27 |
| 7433125 | Light quantity distribution control element and optical apparatus using the same | Motonobu Yoshikawa, Yasuhiro Tanaka, Michihiro Yamagata, Hiroshi Yamaguchi | 2008-10-07 |
| 7426085 | Lens barrel, imaging device and camera | Keiki Yoshitsugu | 2008-09-16 |
| 7408703 | Wide-angle imaging optical system and wide-angle imaging apparatus surveillance imaging apparatus vehicle-mounted imaging apparatus and projection apparatus using the wide-angle imaging optical system | Daizaburo Matsuki, Motonobu Yoshikawa | 2008-08-05 |
| 7317582 | Zoom lens, video enlarging/projecting system, video projector, rear projector, and multivision system | Syunsuke Kimura, Masayuki Takahashi | 2008-01-08 |
| 7292321 | Contact detection sensor and contact detection method | Michihiro Yamagata, Katsuhiko Hayashi, Hiroshi Yamaguchi | 2007-11-06 |
| 7283211 | Distance-measuring optical apparatus, distance-measuring method, distance-measuring system, in-vehicle imager, and in-vehicle driving support apparatus | Motonobu Yoshikawa, Daizaburo Matsuki | 2007-10-16 |
| 7265886 | Optical scanner and image forming apparatus | Motonobu Yoshikawa, Daizaburo Matsuki | 2007-09-04 |
| 7256942 | Single lens element, light source device and scanning optical device | Michihiro Yamagata, Motonobu Yoshikawa, Yasuhiro Tanaka, Daizaburo Matsuki, Masaru Fujita +1 more | 2007-08-14 |
| 7239448 | Light quantity distribution control element and optical apparatus using the same | Motonobu Yoshikawa, Yasuhiro Tanaka, Michihiro Yamagata, Hiroshi Yamaguchi | 2007-07-03 |
| 7216656 | Semiconductor substrate cleansing apparatus | — | 2007-05-15 |
| 7212254 | Illumination optical system, projection video system using the same, and integral-type video display | Motonobu Yoshikawa | 2007-05-01 |