Inventor
OJIMA YOSHINORI
JP16 patents
⚠️ This page may combine multiple inventors who share the name “OJIMA YOSHINORI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
EBARA CORP
15 patentsUS5846062ADec 8, 1998
Two stage screw type vacuum pump with motor in-between the stages
EBARA CORP163 citations98
US6700273B1Mar 2, 2004
Gas transfer machine
EBARA CORP24 citations92
US5814913ASep 29, 1998
Multishaft electric motor and positive-displacement pump combined with such multishaft electric motor
EBARA CORP22 citations92
US5779453AJul 14, 1998
Vacuum pump motor arrangement having reduced heat generation
EBARA CORP52 citations92
US5149253ASep 22, 1992
Magnet pumps
EBARA CORP63 citations92
US9614411B2Apr 4, 2017
Canned motor and vacuum pump
EBARA CORP7 citations83
US6902380B2Jun 7, 2005
Vacuum pump with pump rotor pairs and permanent magnet motor
EBARA CORP17 citations83
US6761542B2Jul 13, 2004
Multishaft electric motor and positive-displacement pump combined with such multishaft electric motor
EBARA CORP6 citations73
US6447271B2Sep 10, 2002
Multishaft electric motor and positive-displacement pump combined with such multishaft electric motor
EBARA CORP5 citations73
US6183218B1Feb 6, 2001
Multishaft electric motor and positive-displacement pump combined with such multishaft electric motor
EBARA CORP10 citations73
US9429166B2Aug 30, 2016
Sealing structure, vacuum pump motor including same sealing structure, and vacuum pump
EBARA CORP2 citations62
US6092994AJul 25, 2000
Liquid delivery device, method of controlling such liquid delivery device, and liquid delivery pump
EBARA CORP6 citations60
US10320260B2Jun 11, 2019
Canned motor and vacuum pump
EBARA CORP0 citations51
US9660496B2May 23, 2017
Canned motor and vacuum pump
EBARA CORP0 citations51
US9291155B2Mar 22, 2016
Vacuum pump motor and vacuum pump having balance rings
EBARA CORP1 citations51