MS

Masami Shirai

PE Pentax: 21 patents #75 of 761Top 10%
PE Pentax: 21 patents #13 of 396Top 4%
PC Pentax Precision Co.: 8 patents #1 of 20Top 5%
AK Asahi Seimitsu Kabushiki Kaisha: 2 patents #18 of 40Top 45%
Overall (All Time): #74,031 of 4,157,543Top 2%
42
Patents All Time

Issued Patents All Time

Showing 1–25 of 42 patents

Patent #TitleCo-InventorsDate
7218384 Surveying system Koji Tsuda, Atsumi Kaneko, Shinobu Uezono, Ryota Ogawa 2007-05-15
7098997 Surveying system Shinobu Uezono, Koji Tsuda, Atsumi Kaneko, Ryota Ogawa, Takeshi Mimura +2 more 2006-08-29
7075634 Surveying system Shinobu Uezono, Koji Tsuda, Atsumi Kaneko, Ryota Ogawa 2006-07-11
6945657 Surveying instrument Shunichiro Wakamiya, Homu Takayama, Kenji Kaneko 2005-09-20
6914636 Optical viewer instrument with photographing function Ken Hirunuma, Atsumi Kaneko, Shuji Yoneyama, Moriyasu Kanai, Gouji Funatsu 2005-07-05
6765653 Electronic distance meter Shinichi Suzuki, Homu Takayama 2004-07-20
6747733 Electronic distance meter Shinichi Suzuki, Homu Takayama, Masayuki Ueno 2004-06-08
6717683 Target for photogrammetric analytical measurement system Shigeru Wakashiro, Masato Hara, Atsumi Kaneko, Toshihiro Nakayama, Atsushi Kida +1 more 2004-04-06
6677568 Surveying instrument having a phase-difference detection type focus detecting device Homu Takayama, Kenji Kaneko 2004-01-13
6629371 Surveying instrument incorporating a magnetic incremental rotary encoder Katsuhiko Kenjo 2003-10-07
6622391 Incremental rotary encoder, and a surveying instrument incorporating a magnetic incremental rotary encoder Masato Noguchi, Katsuhiko Kenjo 2003-09-23
6618126 Surveying instrument having a sighting telescope and a phase-difference detection type focus detection device therefor Masayuki Murata, Takayuki Ito 2003-09-09
6600308 Magnetic encoder and method for reducing harmonic distortion thereof Masato Noguchi 2003-07-29
6580495 Surveying instrument having a phase-difference detection type focus detecting device and a beam-splitting optical system 2003-06-17
6555809 Incremental rotary encoder Katsuhiko Kenjo 2003-04-29
6556283 Electronic distance meter Shinichi Suzuki, Homu Takayama 2003-04-29
6550150 Surveying instrument incorporating a magnetic incremental rotary encoder Katsuhiko Kenjo 2003-04-22
6532059 Surveying instrument having an optical distance meter Kiyoshi Araki 2003-03-11
6501541 Electronic distance meter 2002-12-31
6501540 Surveying instrument having an optical distance meter Shunichiro Wakamiya 2002-12-31
6492806 Magnetic encoder and survey instrument having magnetic encoder 2002-12-10
6480266 Autofocus distance-measuring optical system Ryota Ogawa, Shinichi Suzuki, Homu Takayama 2002-11-12
6469777 Surveying instrument having an optical distance meter 2002-10-22
6384405 Incremental rotary encoder Katsuhiko Kenjo 2002-05-07
6354010 Surveying instrument 2002-03-12