Inventor · disambiguated record
Kazumasa Hirai
Also filed as: HIRAI KAZUMASA
9 granted patents·1 pending application·265 citations·filing 1996–2009
88Inventor score
Top patents by PatentIndex Score
10 records- 0195US6243559B1Belt fixing deviceRICOH KK·Filed 1997·Granted Jun 5, 2001·93 cites·12 claims
- 0293US6055390AFixing device and method for controlling fixing temperature in a stable mannerRICOH KK·Filed 1998·Granted Apr 25, 2000·67 cites·8 claims
- 0391US6198888B1Fixing device for controlling fixing temperature in a stable mannerRICOH KK·Filed 1999·Granted Mar 6, 2001·49 cites·4 claims
- 0486US6501935B2Belt-type fixing apparatus having a fixing roller provided with a soft foam layerRICOH KK·Filed 1998·Granted Dec 31, 2002·42 cites·14 claims
- 0570US6750602B2Projection type cathode ray tube device employing a cathode ray tube having a neck composed of different-diameter portionsHITACHI LTD·Filed 2002·Granted Jun 15, 2004·11 cites·10 claims
- 0651US2010157203A1Cold cathode discharge tube and manufacturing method thereof and liquid crystal display deviceHITACHI DISPLAY DEVICES LTD·Filed 2009·Application pending·0 cites
- 0749US6222309B1Color cathode ray tube with specific skirt portionHITACHI LTD·Filed 2000·Granted Apr 24, 2001·2 cites·12 claims
- 0848US6998767B2Projection tube having different neck diametersHITACHI LTD·Filed 2001·Granted Feb 14, 2006·1 cites·13 claims
- 0940US7075221B2Projection tube having different neck diametersHITACHI ELECTRONIC DEVICES LTD·Filed 2003·Granted Jul 11, 2006·0 cites·6 claims
- 1027US6166482AShadow mask structure with specific skirt portionHITACHI LTD·Filed 1996·Granted Dec 26, 2000·0 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →