Inventor
KOJIMA NORIATSU
7 patents
Patents
7 patentsUS4181330AJan 1, 1980
Horn shaped multi-inlet pipe fitting
KOJIMA NORIATSU540 citations97
US4298206ANov 3, 1981
Flexible packing for sealing pipeline joints
KOJIMA NORIATSU98 citations94
US6056014AMay 2, 2000
Drainage collective pipe joint
KOJIMA NORIATSU22 citations89
US4252348AFeb 24, 1981
Flanged pipe joints
KOJIMA NORIATSU20 citations80
US5415438AMay 16, 1995
Drainage vertical tube joint
KOJIMA NORIATSU10 citations72
US5887913AMar 30, 1999
Pipe joint structure
KOJIMA NORIATSU10 citations68
US4229923AOct 28, 1980
Method of connecting pipes and flanged pipe joints used therein
KOJIMA NORIATSU4 citations60