Inventor
USHITORA AKIHIRO
JP10 patents
Patents
10 patentsUS5871027AFeb 16, 1999
Vacuum valve controller
EBARA CORP34 citations92
US5588458ADec 31, 1996
Vacuum valve controller for vacuum sewer system
EBARA CORP31 citations92
US5487646AJan 30, 1996
Vacuum pump control apparatus for an evacuating type waste water collecting system
EBARA CORP24 citations91
US5114280AMay 19, 1992
Vacuum type sewage collecting system and vacuum valve controller for the same
EBARA CORP22 citations91
US5083885AJan 28, 1992
Laying structure for vacuum sewer pipe of vacuum sewage collecting system
EBARA CORP21 citations81
US5575454ANov 19, 1996
Vacuum valve
EBARA CORP14 citations73
US5100266AMar 31, 1992
Pipe connection structure and vacuum-type sewage collecting apparatus incorporating the pipe connection structure
EBARA CORP15 citations72
US5074718ADec 24, 1991
Vacuum-type sewage collecting apparatus
EBARA CORP7 citations72
US6053703AApr 25, 2000
Control method for displacement-type fluid machine, and apparatus thereof
EBARA CORP9 citations70
US5292104AMar 8, 1994
Vacuum interface valve
EBARA CORP1 citations51