P

Inventor

TANAKA YASUYUKI

JP213 patents
⚠️ This page may combine multiple inventors who share the name “TANAKA YASUYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CANON KK

12 patents

TODA KOGYO CORP

10 patents
US6350505B2Feb 26, 2002

High-density acicular hematite particles, non-magnetic undercoat layer and magnetic recording medium

TODA KOGYO CORP16 citations93
US6042937AMar 28, 2000

Titanium oxide particles, substrate for magnetic recording medium and magnetic recording medium using the same

TODA KOGYO CORP21 citations93
US5750250AMay 12, 1998

Hematite particles and magnetic recording medium having a non-magnetic under-coat layer containing hematite (Fe2 O3) particles.

TODA KOGYO CORP29 citations93
US6416864B1Jul 9, 2002

Black magnetic composite particles for a black magnetic toner

TODA KOGYO CORP16 citations92
US6130017AOct 10, 2000

Black non-magnetic composite particles for black toner and black toner using the same

TODA KOGYO CORP30 citations92
US5587232ADec 24, 1996

Non-magnetic particles for non-magnetic undercoating layer of magnetic recording medium, non-magnetic undercoating layer containing the same, and magnetic recording medium having the undercoating layer

TODA KOGYO CORP25 citations91
US5124207AJun 23, 1992

Magnetic iron oxide particles

TODA KOGYO CORP28 citations91
US6379855B1Apr 30, 2002

Black magnetic toner and black magnetic composite particles therefor

TODA KOGYO CORP16 citations84
US5604015AFeb 18, 1997

Non-magnetic undercoat layer for magnetic recording medium, magnetic recording medium and non-magnetic particles

TODA KOGYO CORP15 citations81
US6863966B1Mar 8, 2005

Black magnetic acicular composite particles for magnetic recording medium and magnetic recording medium using the same

TODA KOGYO CORP9 citations74

NIPPON MEKTRON KK

6 patents

DAINIPPON INK & CHEMICALS

5 patents

KAO CORP

3 patents

PANASONIC IP MAN CO LTD

2 patents

TOSHIBA KK

2 patents

FUJI LATEX CO

1 patent

TOYODA GOSEI KK

1 patent

SUMITOMO RUBBER IND

1 patent

NIPPON CHEMICAL IND

1 patent

KANSAI ELECTRIC POWER CO

1 patent

NITTO DENKO CORP

1 patent

NTT DOCOMO INC

1 patent

TOKUYAMA CORP

1 patent

KATO YUSUKE

1 patent

KURARAY CO

1 patent

Showing the top 50 of 213 patents by PatentIndex Score.