Hirohisa Obata

AK Aisan Kogyo Kabushiki Kaisha: 3 patents #173 of 642Top 30%

📍 Amuru, UG: #202 of 499 inventorsTop 45%

Overall (All Time): #1,629,343 of 4,157,543Top 40%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
6139289	Magnetically coupled pump	Junji Ito	2000-10-31
6095770	Magnetically coupled pump	Junji Ito	2000-08-01
5924851	Magnetically coupled pump having a back-up radical sliding surface on the shaft	Junji Ito	1999-07-20