Inventor · disambiguated record
Katsuhiro Iwasaki
Also filed as: IWASAKI KATSUHIRO
24 granted patents·5 pending applications·160 citations·filing 1985–2023
95Inventor score
Top patents by PatentIndex Score
29 records- 0189US10187175B2Optical multiplexer/demultiplexer and optical transceiverKOHOKU KOGYO KK·Filed 2017·Granted Jan 22, 2019·7 cites·19 claims
- 0283US5065985AMethod for smelting reduction of iron ore and apparatus thereforNIPPON KOKAN KK·Filed 1990·Granted Nov 19, 1991·34 cites·12 claims
- 0379US6837916B2Smelting reduction methodNIPPON KOKAN KK·Filed 2001·Granted Jan 4, 2005·18 cites·15 claims
- 0465US4936908AMethod for smelting and reducing iron oresNIPPON KOKAN KK·Filed 1988·Granted Jun 26, 1990·12 cites·16 claims
- 0564US4995906AMethod for smelting reduction of iron oreNIPPON KOKAN KK·Filed 1988·Granted Feb 26, 1991·12 cites·32 claims
- 0660US4961784AMethod of smelting reduction of chromium raw materials and a smelting reduction furnace thereofNIPPON KOKAN KK·Filed 1988·Granted Oct 9, 1990·11 cites·6 claims
- 0756US5039480AMethod for manufacturing molten metal containing Ni and CrNIPPON KOKAN KK·Filed 1990·Granted Aug 13, 1991·13 cites·18 claims
- 0855US11067755B2Optical fiber module and method for manufacturing the sameKOHOKU KOGYO KK·Filed 2019·Granted Jul 20, 2021·0 cites·20 claims
- 0955US4988079AApparatus for smelting and reducing iron oresNIPPON KOKAN KK·Filed 1990·Granted Jan 29, 1991·9 cites·4 claims
- 1054US5047082AMethod for smelting reduction of Ni oreNIPPON KOKAN KK·Filed 1990·Granted Sep 10, 1991·8 cites·11 claims
- 1153US5017220AMethod for smelting reduction of Ni oreNIPPON KOKAN KK·Filed 1990·Granted May 21, 1991·8 cites·16 claims
- 1248US12404201B2Preform for optical fiber and manufacturing method of optical fiberKOHOKU KOGYO KK·Filed 2021·Granted Sep 2, 2025·0 cites·13 claims
- 1347US7551343B2Magneto-optical device and manufacturing method thereofFDK CORP·Filed 2006·Granted Jun 23, 2009·0 cites·8 claims
- 1447US2025172755A1Fan-in/fan-out deviceKOHOKU KOGYO KK·Filed 2023·Application pending·0 cites
- 1545US2005072152A1Hydrogen production method, hydrogen production apparatus, hydrogen supply facilities, nd method for generating electric powerJEE ENGINEERING CORP·Filed 2003·Application pending·0 cites
- 1644US5000784AMethod for smelting reduction of iron oreNIPPON KOKAN KK·Filed 1988·Granted Mar 19, 1991·4 cites·20 claims
- 1743USD879768SOptical communication moduleKOHOKU KOGYO KK·Filed 2017·Granted Mar 31, 2020·3 cites·1 claims
- 1843US5047081AMethod of decarburizing high chromium molten metalNIPPON KOKAN KK·Filed 1988·Granted Sep 10, 1991·4 cites·29 claims
- 1941US4792352AMethod for manufacturing steel through smelting reductionNIPPON KOKAN KK·Filed 1987·Granted Dec 20, 1988·4 cites·17 claims
- 2040US5074530AApparatus for smelting reduction of iron oreNIPPON KOKAN KK·Filed 1990·Granted Dec 24, 1991·3 cites·4 claims
- 2139US4944799AMethod of producing stainless molten steel by smelting reductionNIPPON KOKAN KK·Filed 1988·Granted Jul 31, 1990·3 cites·20 claims
- 2239US4935054AMethod of charging chromium ores in a smelting reductionNIPPON KOKAN KK·Filed 1988·Granted Jun 19, 1990·3 cites·7 claims
- 2338US12436340B2Optical filter deviceKOHOKU KOGYO KK·Filed 2021·Granted Oct 7, 2025·0 cites·6 claims
- 2438US2024061204A1Fan-in/fan-out deviceKOHOKU KOGYO KK·Filed 2021·Application pending·0 cites
- 2538US2018016653A1Steel material for bearings that has excellent rolling fatigue characteristics, and bearing partKOBE STEEL LTD·Filed 2016·Application pending·0 cites
- 2636US9821381B2Gaseous fuel supply apparatus for sintering machineJFE STEEL CORP·Filed 2013·Granted Nov 21, 2017·0 cites·8 claims
- 2735US2003047038A1Method and apparatus for metal smeltingFiled 2002·Application pending·0 cites
- 2834USD879767SOptical communication moduleKOHOKU KOGYO KK·Filed 2017·Granted Mar 31, 2020·1 cites·1 claims
- 2933US4601749AMethod for adjusting chemical composition of molten pig iron tapped from blast furnaceNIPPON KOKAN KK·Filed 1985·Granted Jul 22, 1986·3 cites·12 claims
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