Inventor
KAWASHIMA KAZUYASU
JP7 patents
⚠️ This page may combine multiple inventors who share the name “KAWASHIMA KAZUYASU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ERMA OPTICAL WORKS
3 patentsUS4469495ASep 4, 1984
Method and device for degassifying liquid
ERMA OPTICAL WORKS84 citations93
US4651087AMar 17, 1987
Apparatus for measuring impurities in ultrapure water
ERMA OPTICAL WORKS9 citations72
US4680552AJul 14, 1987
Apparatus for measuring impurities in super-pure water without exposure to surrounding atmosphere
ERMA OPTICAL WORKS7 citations69