Inventor · disambiguated record
Haruo Koyama
Also filed as: KOYAMA HARUO
15 granted patents·1 pending application·254 citations·filing 1981–2020
93Inventor score
Files withMITA INDUSTRIAL CO LTD7BRIDGESTONE CORP3KYOCERA MITA CORP3DAIDO STEEL CO LTD2NIPPON STEEL CORP1
Top patents by PatentIndex Score
16 records- 0195US5277479AOne piece type resin wheelBRIDGESTONE CORP·Filed 1992·Granted Jan 11, 1994·76 cites·15 claims
- 0286US4913747AMethod of and apparatus for heat-treating railsNIPPON STEEL CORP·Filed 1989·Granted Apr 3, 1990·32 cites·4 claims
- 0385US4500897AHeat-sensitive black recording elementMITA INDUSTRIAL CO LTD·Filed 1983·Granted Feb 19, 1985·26 cites·15 claims
- 0482US7466952B2Image-forming machine fixing device with a nipping region having a pressure distributionKYOCERA MITA CORP·Filed 2005·Granted Dec 16, 2008·7 cites·9 claims
- 0581US6432159B1Magnetic mixtureDAIDO STEEL CO LTD·Filed 2000·Granted Aug 13, 2002·22 cites·16 claims
- 0679US5282673ACompound resin wheelBRIDGESTONE CORP·Filed 1992·Granted Feb 1, 1994·40 cites·32 claims
- 0771US5234259AResin wheel with more than two independently molded partsBRIDGESTONE CORP·Filed 1992·Granted Aug 10, 1993·29 cites·18 claims
- 0865US7787801B2Image forming apparatus with shield memberKYOCERA MITA CORP·Filed 2008·Granted Aug 31, 2010·2 cites·20 claims
- 0956US7860444B2Image-forming machine fixing device with a nipping region having a pressure distributionKYOCERA MITA CORP·Filed 2008·Granted Dec 28, 2010·1 cites·1 claims
- 1051US2020398339A1Powder for additive manufacturing, and die-casting die partDAIDO STEEL CO LTD·Filed 2020·Application pending·0 cites
- 1142US4607942AElectrostatic copying apparatusMITA INDUSTRIAL CO LTD·Filed 1984·Granted Aug 26, 1986·8 cites·41 claims
- 1236US4416964ADry magnetic developer containing a non-pulverizing agglumerate of cubic magnetite particlesMITA INDUSTRIAL CO LTD·Filed 1981·Granted Nov 22, 1983·3 cites·1 claims
- 1333US5834634AMethod and apparatus for measuring the toner concentration and the amount of electric charge of a two-component developing agentMITA INDUSTRIAL CO LTD·Filed 1996·Granted Nov 10, 1998·3 cites·8 claims
- 1432US5150156AElectrostatic image recording machine capable of multiple gradationsMITA INDUSTRIAL CO LTD·Filed 1990·Granted Sep 22, 1992·2 cites·8 claims
- 1531US4407923AOne component magnetic developerMITA INDUSTRIAL CO LTD·Filed 1982·Granted Oct 4, 1983·2 cites·6 claims
- 1630US4502067AHeat-sensitive black recording materialMITA INDUSTRIAL CO LTD·Filed 1983·Granted Feb 26, 1985·1 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →