Inventor · disambiguated record
Tomomitsu Yokoyama
Also filed as: YOKOYAMA TOMOMITSU
9 granted patents·121 citations·filing 1990–2000
89Inventor score
Top patents by PatentIndex Score
9 records- 0185US6379611B1High strength, low alloy, heat resistant steelSUMITOMO METAL IND·Filed 2000·Granted Apr 30, 2002·22 cites·11 claims
- 0274US5746843ALow Mn-low Cr ferritic heat resistant steel excellent in strength at elevated temperaturesSUMITOMO METAL IND·Filed 1997·Granted May 5, 1998·26 cites·19 claims
- 0372US5407635ALow-chromium ferritic heat-resistant steel with improved toughness and creep strengthSUMITOMO METAL IND·Filed 1993·Granted Apr 18, 1995·20 cites·24 claims
- 0461US5945064AWelding material for low chromium (Cr) ferritic steel having high toughnessMITSUBISHI HEAVY IND LTD·Filed 1998·Granted Aug 31, 1999·16 cites·9 claims
- 0557US5211909ALow-alloy heat-resistant steel having improved creep strength and toughnessSUMITOMO METAL IND·Filed 1992·Granted May 18, 1993·13 cites·19 claims
- 0648US5814274ALow-Cr ferritic steels and low-Cr ferritic cast steels having excellent high teperature strength and weldabilityMITSUBISHI HEAVY IND LTD·Filed 1997·Granted Sep 29, 1998·9 cites·24 claims
- 0744US5240516AHigh-chromium ferritic, heat-resistant steel having improved resistance to copper checkingSUMITOMO METAL IND·Filed 1992·Granted Aug 31, 1993·9 cites·38 claims
- 0827US6659024B1Powdery fuel combustion apparatusMITSUBISHI HEAVY IND LTD·Filed 1998·Granted Dec 9, 2003·2 cites·8 claims
- 0921US5143024APressure fluidized bed firing boilerMITSUBISHI HEAVY IND LTD·Filed 1990·Granted Sep 1, 1992·4 cites·3 claims
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