Inventor
HAYASHI KEN-ICHI
JP7 patents
⚠️ This page may combine multiple inventors who share the name “HAYASHI KEN-ICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO HEAVY INDUSTRIES
3 patentsUS6621041B2Sep 16, 2003
Marking method and marking apparatus using multiple photon absorption, marked optical element manufactured by using the marking method and the marking apparatus
SUMITOMO HEAVY INDUSTRIES13 citations91
US6969820B2Nov 29, 2005
Marking method and marking apparatus using multiple photon absorption, marked optical element manufactured by using the marking method and the marking apparatus
SUMITOMO HEAVY INDUSTRIES12 citations83
US6869749B2Mar 22, 2005
Marking method and marking apparatus using multiple photon absorption, marked optical element manufactured by using the marking method and the marking apparatus
SUMITOMO HEAVY INDUSTRIES4 citations72