Inventor
KITAYAMA MASAYA
JP37 patents
⚠️ This page may combine multiple inventors who share the name “KITAYAMA MASAYA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UENO SEIYAKU OYO KENKYUJO KK
33 patentsUS7179401B2Feb 20, 2007
Thermotropic liquid-crystalline polymer
UENO SEIYAKU OYO KENKYUJO KK21 citations92
US6984712B2Jan 10, 2006
Liquid-crystal polyester resin
UENO SEIYAKU OYO KENKYUJO KK26 citations92
US6409812B1Jun 25, 2002
AZO compounds and process for producing the same
UENO SEIYAKU OYO KENKYUJO KK20 citations92
US5973126AOct 26, 1999
Azo compounds and process for producing the same
UENO SEIYAKU OYO KENKYUJO KK22 citations92
US5786523AJul 28, 1998
Naphthol derivatives and process for producing the same
UENO SEIYAKU OYO KENKYUJO KK7 citations74
US6664341B2Dec 16, 2003
Liquid-crystal polyester resin composition
UENO SEIYAKU OYO KENKYUJO KK8 citations73
US6005085ADec 21, 1999
Condensed azo compounds and process for preparing the same
UENO SEIYAKU OYO KENKYUJO KK13 citations73
US5965715AOct 12, 1999
Bisazo compounds and process for the preparation thereof
UENO SEIYAKU OYO KENKYUJO KK7 citations73
US5847233ADec 8, 1998
Naphthol derivatives and process for producing the same
UENO SEIYAKU OYO KENKYUJO KK1 citations63
US6849742B2Feb 1, 2005
Binaphthol derivative and process for producing the same
UENO SEIYAKU OYO KENKYUJO KK3 citations62
US6802989B1Oct 12, 2004
Liquid crystal polyester resin
UENO SEIYAKU OYO KENKYUJO KK4 citations62
US6084101AJul 4, 2000
Naphtol derivative and process for producing the same
UENO SEIYAKU OYO KENKYUJO KK2 citations62
US6020470AFeb 1, 2000
Water-soluble azo compounds and process for producing the same
UENO SEIYAKU OYO KENKYUJO KK4 citations61
US6451109B1Sep 17, 2002
Columnar crystals of 6-hydroxy-2-naphthoic acid and process for manufacturing the same
UENO SEIYAKU OYO KENKYUJO KK2 citations60
US6388045B1May 14, 2002
Liquid-crystalline polymer
UENO SEIYAKU OYO KENKYUJO KK4 citations60
US5770766AJun 23, 1998
Method for separating and purifying hydroxynaphtalenecarboxylic acids
UENO SEIYAKU OYO KENKYUJO KK5 citations57
US7238769B2Jul 3, 2007
Method for joining liquid-crystalline polyester resin composition parts and jointed article made of liquid-crystalline polyester resin composition
UENO SEIYAKU OYO KENKYUJO KK0 citations52
US6639092B2Oct 28, 2003
Metal salt of binaphthol derivative and method for preparing the same
UENO SEIYAKU OYO KENKYUJO KK0 citations52
US6451988B1Sep 17, 2002
Naphthol derivatives
UENO SEIYAKU OYO KENKYUJO KK1 citations52
US6252104B1Jun 26, 2001
Naphthol derivatives and process for producing the same
UENO SEIYAKU OYO KENKYUJO KK0 citations52
US7355071B2Apr 8, 2008
Method for preparing 2,6-naphthalene dicarboxylic acid
UENO SEIYAKU OYO KENKYUJO KK1 citations51
US6239263B1May 29, 2001
Water-soluble azo compounds and process for the preparation thereof
UENO SEIYAKU OYO KENKYUJO KK1 citations51
US6403827B1Jun 11, 2002
Crystal of 2-hydroxynaphthalene-3-carboxylic acid and process for the preparation thereof
UENO SEIYAKU OYO KENKYUJO KK0 citations50
US7304182B2Dec 4, 2007
Crystalline parahydroxybenzoic acid anhydride and process for preparing the same
UENO SEIYAKU OYO KENKYUJO KK0 citations48
US6891072B2May 10, 2005
Process for production of dimers or aromatic monohydroxyl compounds
UENO SEIYAKU OYO KENKYUJO KK0 citations48
US6673962B2Jan 6, 2004
Granule of parahydroxybenzoic acid or parahydroxybenzoic ester and process for producing the same
UENO SEIYAKU OYO KENKYUJO KK1 citations48
US6194608B1Feb 27, 2001
Process for separating and purifying alkali metal salts of hydroxynaphthalenecarboxylic acids
UENO SEIYAKU OYO KENKYUJO KK0 citations47
US6133475AOct 17, 2000
Process for producing 2-hydroxynaphthalene-3,6-dicarboxylic acid
UENO SEIYAKU OYO KENKYUJO KK1 citations46
US7169523B2Jan 30, 2007
Charge controllers
UENO SEIYAKU OYO KENKYUJO KK0 citations40
US7074536B2Jul 11, 2006
Alkylenebisnaphtol derivative and charge control agent which consists of the same
UENO SEIYAKU OYO KENKYUJO KK0 citations40
US7030261B2Apr 18, 2006
Method for preparing 2-hydroxy-6-ureidocarbonyl naphthalene derivative
UENO SEIYAKU OYO KENKYUJO KK0 citations39
US6072042AJun 6, 2000
Bis(aminocarbonylnaphthol) derivative
UENO SEIYAKU OYO KENKYUJO KK0 citations38
US6548703B1Apr 15, 2003
Toning agent
UENO SEIYAKU OYO KENKYUJO KK0 citations36