Inventor
SEKIGUCHI KOICHI
JP34 patents
⚠️ This page may combine multiple inventors who share the name “SEKIGUCHI KOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
19 patentsUS6589035B1Jul 8, 2003
Scroll compressor having a valved back-pressure chamber and a bypass for over-compression
HITACHI LTD95 citations98
US7354259B2Apr 8, 2008
Scroll compressor having a valved back pressure chamber and a bypass for overcompression
HITACHI LTD67 citations97
US7137796B2Nov 21, 2006
Scroll compressor
HITACHI LTD71 citations97
US7118358B2Oct 10, 2006
Scroll compressor having a back-pressure chamber control valve
HITACHI LTD76 citations97
US6769888B2Aug 3, 2004
Scroll compressor having a valved back pressure chamber and a bypass for overcompression
HITACHI LTD69 citations96
US6261072B1Jul 17, 2001
Scroll compressor
HITACHI LTD22 citations93
US6301912B1Oct 16, 2001
Heat pump apparatus
HITACHI LTD30 citations92
US5580233ADec 3, 1996
Compressor with self-aligning rotational bearing
HITACHI LTD46 citations90
US5230616AJul 27, 1993
Rotary compressor with shaft balancers
HITACHI LTD51 citations90
US5030073AJul 9, 1991
Rotary compressor
HITACHI LTD23 citations90
US6203290B1Mar 20, 2001
Closed-typed electrically-driven compressor
HITACHI LTD17 citations82
US6079963AJun 27, 2000
Displacement type compressor and method of forming coating film
HITACHI LTD6 citations74
US6494696B2Dec 17, 2002
Scroll compressor
HITACHI LTD7 citations73
US6231317B1May 15, 2001
Sealed compressor driven by a motor
HITACHI LTD14 citations73
US5104297AApr 14, 1992
Rotary compressor having an eccentric pin with reduced axial dimension
HITACHI LTD14 citations73
US5090882AFeb 25, 1992
Rotary fluid machine having hollow vanes and refrigeration apparatus incorporating the rotary fluid machine
HITACHI LTD18 citations73
US6637550B2Oct 28, 2003
Displacement type fluid machine
HITACHI LTD10 citations72
US5730588AMar 24, 1998
Scroll compressor having a fixed scroll plate with groove
HITACHI LTD10 citations72
US6358028B1Mar 19, 2002
Scroll compressor
HITACHI LTD2 citations60
IWATSU ELECTRIC CO LTD
6 patentsUS4314109AFeb 2, 1982
Synchronization system for key telephone system
IWATSU ELECTRIC CO LTD8 citations74
US3971898AJul 27, 1976
Visual indicating control circuit in key telephone system
IWATSU ELECTRIC CO LTD7 citations69
US3973083AAug 3, 1976
Rotary dial device for a telephone set
IWATSU ELECTRIC CO LTD2 citations63
US4726016AFeb 16, 1988
Conference system
IWATSU ELECTRIC CO LTD5 citations60
US4175216ANov 20, 1979
Intercom calling apparatus in a key telephone system
IWATSU ELECTRIC CO LTD3 citations58
US4280022AJul 21, 1981
Key telephone systems
IWATSU ELECTRIC CO LTD6 citations56
TOSHIBA KK
3 patentsUS5379424AJan 3, 1995
Distributed database management system for retrieving data files from databases selected based upon retrieval time
TOSHIBA KK83 citations94
US5293627AMar 8, 1994
Method for adjusting curent clock counts in a distributed computer system
TOSHIBA KK38 citations91
US5291594AMar 1, 1994
Commit processing system which provides a list of sites to each site to allow for direct communication between participation sites and the transaction generation site
TOSHIBA KK36 citations91