Inventor

ISHIJIMA SABURO

JP3 patents

Patents

3 patents

US4417722ANov 29, 1983

Vacuum furnace for heat treatment

NIPPON OXYGEN CO LTD28 citations90

US4157779AJun 12, 1979

Process for producing a metal vacuum bottle

NIPPON OXYGEN CO LTD25 citations78

US4457488AJul 3, 1984

Sluice valve arrangement

NIPPON OXYGEN CO LTD1 citations50