Inventor

YOKOYAMA IWAO

JP4 patents

⚠️ This page may combine multiple inventors who share the name “YOKOYAMA IWAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI LTD

2 patents

US4663116AMay 5, 1987

Nuclear reactor

HITACHI LTD8 citations71

US4993454AFeb 19, 1991

Piping branch structure

HITACHI LTD1 citations49

TOKO VALEX CO LTD

1 patent

US6062539AMay 16, 2000

Valve gear and coupling mechanism for coupling the valve stem of the valve and the driving shaft of actuator

TOKO VALEX CO LTD15 citations66

FUJINON SANO CORP

1 patent

US7196854B2Mar 27, 2007

Complex optical element and method for manufacturing thereof

FUJINON SANO CORP0 citations40