Inventor
NAKASHIMA AKIO
JP29 patents
⚠️ This page may combine multiple inventors who share the name “NAKASHIMA AKIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PILOT INK CO LTD
15 patentsUS6416853B1Jul 9, 2002
Color-change laminates and toy sets with the use thereof
PILOT INK CO LTD102 citations98
US6228804B1May 8, 2001
Color-change materials
PILOT INK CO LTD99 citations98
US5558699ASep 24, 1996
Thermochromic color-memory composition
PILOT INK CO LTD56 citations96
US5858914AJan 12, 1999
Thermochromic coloring color-memory footwear
PILOT INK CO LTD26 citations92
US6953345B1Oct 11, 2005
Water-metachromatic cloth sheet, toy set using the same, and writing instrument for water-metachromatic members
PILOT INK CO LTD26 citations89
US6638620B2Oct 28, 2003
Reversible thermochromic composition having improved light-fastness and product comprising same
PILOT INK CO LTD13 citations84
US7632564B2Dec 15, 2009
Liquid composition for metachromatic members, and metachromatic member set making use of the same
PILOT INK CO LTD5 citations74
US6964807B2Nov 15, 2005
Water-metachromatic laminate, and process for its production
PILOT INK CO LTD8 citations74
US7168876B2Jan 30, 2007
Writing instrument for water-metachromatic members with detachable pen point holder
PILOT INK CO LTD7 citations70
US7985701B2Jul 26, 2011
Water-discoloring wall adhering material and water-discoloring wall adhering material set using the same
PILOT INK CO LTD5 citations63
US7753680B2Jul 13, 2010
Water-discoloring drawing toy and water-discoloring drawing toy set including the same
PILOT INK CO LTD5 citations63
US7056570B2Jun 6, 2006
Water-metachromatic laminate, and process for its production
PILOT INK CO LTD4 citations63
US6984418B2Jan 10, 2006
Water-metachromatic laminate, and process for its production
PILOT INK CO LTD4 citations63
US12083782B2Sep 10, 2024
Discoloring body having glossiness
PILOT INK CO LTD0 citations62
US8025961B2Sep 27, 2011
Liquid composition for metachromatic members, and metachromatic member set making use of the same
PILOT INK CO LTD0 citations52
HITACHI LTD
6 patentsUS5206760AApr 27, 1993
Multiprojection apparatus
HITACHI LTD44 citations89
US4858030AAug 15, 1989
Reproducing apparatus of a video disc player
HITACHI LTD21 citations82
US5418575AMay 23, 1995
Color display apparatus having compensating unit
HITACHI LTD11 citations73
US4328514AMay 4, 1982
CRT Drive circuit comprising white and black level clamping circuitry
HITACHI LTD10 citations73
US3979641ASep 7, 1976
Vertical deflection output circuitry for television receiver
HITACHI LTD7 citations71
US4550348AOct 29, 1985
Video disc player skip/arm servo system
HITACHI LTD0 citations31