Inventor
HIRAOKA EIICHI
JP4 patents
⚠️ This page may combine multiple inventors who share the name “HIRAOKA EIICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO HEAVY INDUSTRIES
3 patentsUS4955498ASep 11, 1990
Sealing structure of pressure container
SUMITOMO HEAVY INDUSTRIES2 citations54
US4942972AJul 24, 1990
Pressure vessel
SUMITOMO HEAVY INDUSTRIES0 citations44
US6965115B2Nov 15, 2005
Airtight processing apparatus, airtight processing method, and electron beam processing apparatus
SUMITOMO HEAVY INDUSTRIES0 citations42