Inventor

YOKOYAMA TOMOMITSU

JP9 patents

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

SUMITOMO METAL IND

5 patents

US5407635AApr 18, 1995

Low-chromium ferritic heat-resistant steel with improved toughness and creep strength

SUMITOMO METAL IND20 citations92

US5746843AMay 5, 1998

Low Mn-low Cr ferritic heat resistant steel excellent in strength at elevated temperatures

SUMITOMO METAL IND26 citations91

US6379611B1Apr 30, 2002

High strength, low alloy, heat resistant steel

SUMITOMO METAL IND22 citations90

US5211909AMay 18, 1993

Low-alloy heat-resistant steel having improved creep strength and toughness

SUMITOMO METAL IND13 citations73

US5240516AAug 31, 1993

High-chromium ferritic, heat-resistant steel having improved resistance to copper checking

SUMITOMO METAL IND9 citations69

MITSUBISHI HEAVY IND LTD

4 patents

US5814274ASep 29, 1998

Low-Cr ferritic steels and low-Cr ferritic cast steels having excellent high teperature strength and weldability

MITSUBISHI HEAVY IND LTD9 citations72

US5945064AAug 31, 1999

Welding material for low chromium (Cr) ferritic steel having high toughness

MITSUBISHI HEAVY IND LTD16 citations71

US6659024B1Dec 9, 2003

Powdery fuel combustion apparatus

MITSUBISHI HEAVY IND LTD2 citations59

US5143024ASep 1, 1992

Pressure fluidized bed firing boiler

MITSUBISHI HEAVY IND LTD4 citations51