Inventor · disambiguated record
Toyofumi Watanabe
Also filed as: WATANABE TOYOFUMI
25 granted patents·1 pending application·243 citations·filing 1989–2014
96Inventor score
Top patents by PatentIndex Score
26 records- 0187US5387473AWeldable black steel sheet with low-gloss appearanceNIPPON KOKAN KK·Filed 1993·Granted Feb 7, 1995·51 cites·32 claims
- 0274US10689765B2Method for cleaning wire and device thereforNAKAGAWA SPECIAL STEEL INC·Filed 2014·Granted Jun 23, 2020·2 cites·4 claims
- 0372US5496652AZinc-plated steel plate having resin coating filmNIPPON KOKAN KK·Filed 1993·Granted Mar 5, 1996·26 cites·20 claims
- 0468US5500290ASurface treated steel sheetNIPPON KOKAN KK·Filed 1994·Granted Mar 19, 1996·14 cites·25 claims
- 0564US5429880AOrganic composite coated steel sheet and a process for manufacturing the sameNIPPON KOKAN KK·Filed 1992·Granted Jul 4, 1995·22 cites·40 claims
- 0664US5336567ANickel alloy electroplated cold-rolled steel sheet excellent in press-formability and phosphating-treatabilityNIPPON KOKAN KK·Filed 1991·Granted Aug 9, 1994·14 cites·16 claims
- 0757US5650238AZinc-electroplated steel sheetNIPPON KOKAN KK·Filed 1995·Granted Jul 22, 1997·11 cites·6 claims
- 0852US5494706AMethod for producing zinc coated steel sheetNIPPON KOKAN KK·Filed 1994·Granted Feb 27, 1996·15 cites·56 claims
- 0951US5629099AAlloying-treated iron-zinc alloy dip-plated steel sheet excellent in press-formability and method for manufacturing sameNIPPON KOKAN KK·Filed 1994·Granted May 13, 1997·14 cites·11 claims
- 1048US5641578AWeldable black steel sheetNIPPON KOKAN KK·Filed 1995·Granted Jun 24, 1997·13 cites·57 claims
- 1146US2008261063A1Resin-Coated Metal SheetJFE STEEL CORP·Filed 2005·Application pending·0 cites
- 1245US4898649AMethod for manufacturing electrolytically chromated steel sheetNIPPON KOKAN KK·Filed 1989·Granted Feb 6, 1990·6 cites·2 claims
- 1343US5391290AMethod for continuously tin-electroplating metal stripNIPPON KOKAN KK·Filed 1993·Granted Feb 21, 1995·6 cites·4 claims
- 1442US5393605AZinciferous plated steel sheet excellent in press-formability and corrosion resistanceNIPPON KOKAN KK·Filed 1992·Granted Feb 28, 1995·9 cites·6 claims
- 1541US5275716AMethod for manufacturing tin-electroplated cold-rolled steel stripNIPPON KOKAN KK·Filed 1993·Granted Jan 4, 1994·5 cites·14 claims
- 1640US5997664AMethod for producing galvanized steel sheetNIPPON KOKAN KK·Filed 1997·Granted Dec 7, 1999·4 cites·6 claims
- 1740US5456816ANickel alloy electroplated cold-rolled steel sheet excellent in press-formability and phosphating-treatability and method for manufacturing sameNIPPON KOKAN KK·Filed 1994·Granted Oct 10, 1995·4 cites·10 claims
- 1839US7691483B2Resin-coated metal sheetJFE STEEL CORP·Filed 2005·Granted Apr 6, 2010·0 cites·13 claims
- 1939US5609968AWeldable colored steel sheetNIPPON KOKAN KK·Filed 1994·Granted Mar 11, 1997·5 cites·11 claims
- 2039US5556715AWeldable colored steel sheetNIPPON KOKAN KK·Filed 1994·Granted Sep 17, 1996·5 cites·9 claims
- 2136US5421988AMethod of manufacturing plated steel sheet with Zn-Cr composite platingNIPPON KOKAN KK·Filed 1994·Granted Jun 6, 1995·3 cites·9 claims
- 2235US5589279AWeldable black steel sheetNIPPON KOKAN KK·Filed 1994·Granted Dec 31, 1996·4 cites·10 claims
- 2334US5810991AZinc-electroplated steel sheet and method thereofNIPPON KOKAN KK·Filed 1997·Granted Sep 22, 1998·4 cites·12 claims
- 2431US5458764AMethod of manufacturing plated steel sheet with zn-cr alloy platingNIPPON KOKAN KK·Filed 1994·Granted Oct 17, 1995·1 cites·2 claims
- 2530US4875984AMethod for manufacturing electrolytically chromated steel sheetNIPPON KOKAN KK·Filed 1989·Granted Oct 24, 1989·1 cites·3 claims
- 2628US5861218AZinciferous plated steel sheet and method for manufacturing sameNKK CORORATION·Filed 1995·Granted Jan 19, 1999·4 cites·16 claims
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