Inventor
KAMEYA HIROTAKA
JP20 patents
⚠️ This page may combine multiple inventors who share the name “KAMEYA HIROTAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
8 patentsUS6554595B2Apr 29, 2003
Compressor with oil-mist separator
HITACHI LTD23 citations91
US6506039B1Jan 14, 2003
Screw compressor
HITACHI LTD24 citations91
US5223052AJun 29, 1993
Method of treating surfaces of rotors of the screw type rotary machine
HITACHI LTD27 citations91
US5314321AMay 24, 1994
Screw-type rotary fluid machine including rotors having treated surfaces
HITACHI LTD39 citations90
US6257855B1Jul 10, 2001
Screw fluid machine
HITACHI LTD10 citations73
US6884049B2Apr 26, 2005
Screw compressor and method of manufacturing rotor for the same
HITACHI LTD10 citations72
US7081311B2Jul 25, 2006
Fuel cell system
HITACHI LTD3 citations62
US8033796B2Oct 11, 2011
Motor-mounted internal gear pump and manufacturing method thereof and electronic equipment
HITACHI LTD6 citations60
HITACHI IND EQUIPMENT SYS
3 patentsUS9145892B2Sep 29, 2015
Water injected scroll air compressor
HITACHI IND EQUIPMENT SYS1 citations52
US8882476B2Nov 11, 2014
Oil-flooded screw compressor, motor drive system, and motor control
HITACHI IND EQUIPMENT SYS1 citations51
US7862314B2Jan 4, 2011
Screw compressor
HITACHI IND EQUIPMENT SYS1 citations46