KO

Keiko Oka

HI Hitachi: 3 patents #10,712 of 28,497Top 40%
HH Hitachi High-Technologies: 2 patents #456 of 1,200Top 40%
BL Biosensor Laboratories: 1 patents #13 of 21Top 65%
HS Hitachi Global Life Solutions: 1 patents #8 of 26Top 35%
KC Kuraray Co.: 1 patents #981 of 1,827Top 55%
Overall (All Time): #540,048 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12385679 Refrigerant quantity diagnosis device, refrigerant system, and refrigerant quantity diagnosis method Yoko Kokugan, Hiroshi Kusumoto, Hisae Shibuya, Noriyuki Tokura, Norikazu Sasaki +2 more 2025-08-12
11378521 Optical condition determination system and optical condition determination method Hiroaki KASAI, Hisae Shibuya, Akio Yazaki 2022-07-05
11143598 Defect inspection apparatus and defect inspection method Toshifumi Honda, Shunichi Matsumoto, Masami Makuuchi, Yuta Urano 2021-10-12
10830706 Defect inspection apparatus and defect inspection method Toshifumi Honda, Shunichi Matsumoto, Masami Makuuchi, Yuta Urano 2020-11-10
8730471 DUV-UV band spectroscopic optical system and spectrometer using same Yasuhiro Yoshitake 2014-05-20
8705024 Wavefront aberration measuring method and device therefor Yasuhiro Yoshitake, Minoru Yoshida 2014-04-22
6139963 Polyvinyl alcohol hydrogel and process for producing the same Hiroaki Fujii, Masanobu Abe 2000-10-31
5674696 Apparatus for the determination of a trace amount of an analyte substance or organism Michihiro Nakamura, Satomi Matsui, Hitoshi Tsuruta 1997-10-07
5556760 Method for assaying urease Michihiro Nakamura, Satomi Matsui, Hitoshi Tsuruta, Yoshihiro Koori, Takuji Kato +1 more 1996-09-17