Inventor · disambiguated record
Masahisa Ochiai
Also filed as: OCHIAI MASAHISA
21 granted patents·1 pending application·135 citations·filing 1994–2005
94Inventor score
Technology areasG03G
Top patents by PatentIndex Score
22 records- 0175US5876893AFerrite carrier, two-component developer and electrostatic imaging method using the developerHITACHI METALS LTD·Filed 1997·Granted Mar 2, 1999·26 cites·14 claims
- 0259US5900343AFerrite carrier for electrophotographic developmentHITACHI METALS LTD·Filed 1997·Granted May 4, 1999·13 cites·11 claims
- 0356US5565966AImage forming method for setting a developing gapHITACHI METALS LTD·Filed 1995·Granted Oct 15, 1996·13 cites·9 claims
- 0455US5659861AMethod of developing electrostatic latent imageHITACHI METALS LTD·Filed 1996·Granted Aug 19, 1997·13 cites·17 claims
- 0551US5926677AImage forming developing methodHITACHI METALS LTD·Filed 1997·Granted Jul 20, 1999·7 cites·3 claims
- 0651US5554479AImage formation methodHITACHI METALS LTD·Filed 1994·Granted Sep 10, 1996·8 cites·17 claims
- 0750US5731121ADeveloper for electrostatic latent image developmentHITACHI METALS LTD·Filed 1996·Granted Mar 24, 1998·10 cites·12 claims
- 0845US5717983ASimultaneous developing/cleaning method using magnetic support memberHITACHI METALS LTD·Filed 1995·Granted Feb 10, 1998·5 cites·10 claims
- 0945US5634182AMethod of developing electrostatic latent imageHITACHI METALS LTD·Filed 1996·Granted May 27, 1997·7 cites·6 claims
- 1042US7439003B2Magnetic black toner for electrophotography having Mn-containing hematite compound and magnetic two-component developer for electrophotography containing the sameFUJI XEROX CO LTD·Filed 2005·Granted Oct 21, 2008·0 cites·17 claims
- 1141US6075964AImage forming developing methodHITACHI METALS LTD·Filed 1997·Granted Jun 13, 2000·4 cites·2 claims
- 1241US5516613ABinary developerHITACHI METALS LTD·Filed 1994·Granted May 14, 1996·5 cites·5 claims
- 1340US5547795AMagnetic carrier for developerHITACHI METALS LTD·Filed 1995·Granted Aug 20, 1996·5 cites·10 claims
- 1438US5866289ADeveloper for electrostatic development and electrostatic developing method using sameHITACHI METALS LTD·Filed 1997·Granted Feb 2, 1999·4 cites·15 claims
- 1535US5789129AFerrite carrier for electrophotographic developmentHITACHI METALS LTD·Filed 1996·Granted Aug 4, 1998·3 cites·3 claims
- 1635US5565967AMethod of forming image using magnetic developer with high volume resistivityHITACHI METALS LTD·Filed 1995·Granted Oct 15, 1996·3 cites·4 claims
- 1735US5559541ADirect recording methodHITACHI METALS LTD·Filed 1995·Granted Sep 24, 1996·3 cites·4 claims
- 1835US5532095AMagnetic tonerHITACHI METALS LTD·Filed 1994·Granted Jul 2, 1996·3 cites·3 claims
- 1934US5669051AMethod of electrostatically forming visual imageHITACHI METALS LTD·Filed 1996·Granted Sep 16, 1997·3 cites·8 claims
- 2031US2003022083A1Magnetic toner and image forming methodFiled 2002·Application pending·0 cites
- 2130US5786120ATwo component developerHITACHI METALS LTD·Filed 1997·Granted Jul 28, 1998·0 cites·1 claims
- 2229US6072974AImage forming developing methodHITACHI METALS LTD·Filed 1997·Granted Jun 6, 2000·0 cites·3 claims
Join the waitlist — get patent alerts
Get an alert when Masahisa Ochiai files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →