HH

Hideaki Hirai

Ricoh Company: 4 patents #201 of 1,683Top 15%
Overall (2011): #27,624 of 364,097Top 8%
4
Patents 2011

Issued Patents 2011

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8036089 Optical pick-up, method of generating aberration for compensation and optical information processing apparatus using the same 2011-10-11
7929398 Optical pickup and optical data processing device using the same 2011-04-19
7894133 Optical element and optical device Yoshiyuki Kiyosawa, Kazuhiro Umeki, Yasuhiro Fujimura 2011-02-22
7872957 Optical pickup and optical data processing device using the same 2011-01-18