Inventor
KOBA KEIICHIRO
JP4 patents
⚠️ This page may combine multiple inventors who share the name “KOBA KEIICHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUI MINING CO LTD
3 patentsUS4719188AJan 12, 1988
Alumina-base abrasion resistant material
MITSUI MINING CO LTD7 citations69
US4812271AMar 14, 1989
Continuous process for producing long α-alumina fibers
MITSUI MINING CO LTD8 citations61
US4777151AOct 11, 1988
Glass-ceramic product and method of making the same
MITSUI MINING CO LTD5 citations56