Inventor
NITTA KATSUHISA
JP18 patents
Patents
18 patentsUS6340723B1Jan 22, 2002
Highly orientated flaky pigment and a process for producing the same
MERCK PATENT GMBH93 citations95
US5350448ASep 27, 1994
Electrically conductive pigments
MERCK PATENT GMBH56 citations95
US5540769AJul 30, 1996
Platelet-like colored pigments and process for producing the same
MERCK PATENT GMBH32 citations92
US5223034AJun 29, 1993
Weather-resistant, pearlescent pigment and process for producing the same in the presence of hypophosphite
MERCK PATENT GMBH33 citations92
US4828623AMay 9, 1989
Water resistant nacreous pigment and process for producing the same
MERCK PATENT GMBH34 citations92
US7419538B2Sep 2, 2008
Highly anti-corrosive metal pigments
MERCK PATENT GMBH39 citations90
US5456749AOct 10, 1995
Anti-discoloring pearly luster pigment and method of preparing the same
MERCK PATENT GMBH43 citations89
US10647861B2May 12, 2020
α-alumina flakes
MERCK PATENT GMBH11 citations85
US6929690B2Aug 16, 2005
Pigment with a metallic luster
MERCK PATENT GMBH13 citations83
US6858072B1Feb 22, 2005
Surface-modified pearl pigment and process for producing the same
MERCK PATENT GMBH15 citations82
US5228911AJul 20, 1993
Oxidized graphite flaky particles and pigments based thereon
MERCK PATENT GMBH20 citations77
US11180659B2Nov 23, 2021
Alpha-alumina flakes
MERCK PATENT GMBH1 citations72
US4720438AJan 19, 1988
Molded clay article coated with pearl pigment
MERCK PATENT GMBH14 citations72
US11891541B2Feb 6, 2024
Alpha-alumina flakes
MERCK PATENT GMBH0 citations62
US11891542B2Feb 6, 2024
α-alumina flakes
MERCK PATENT GMBH0 citations62
US11142649B2Oct 12, 2021
α-alumina flakes
MERCK PATENT GMBH0 citations62
US7384664B2Jun 10, 2008
Positive-electrode active material for non-aqueous electrolyte secondary cell and process for preparing the same
MERCK PATENT GMBH4 citations60
US10457812B2Oct 29, 2019
α-alumina flakes
MERCK PATENT GMBH0 citations51