Assignee
TOKUYAMA CORP
JP403 patents
Top patents by PatentIndex Score
US5621017AApr 15, 1997
Photochromic composition and method producing photochromic cured product
TOKUYAMA CORP172 citations98
US5904159AMay 18, 1999
Polishing slurries and a process for the production thereof
TOKUYAMA CORP94 citations97
US5976481ANov 2, 1999
Polycrystal silicon rod and production process therefor
TOKUYAMA CORP52 citations96
US5687518ANov 18, 1997
Window frame having outer frame member made of resin
TOKUYAMA CORP65 citations96
US5776376AJul 7, 1998
Photochromic curable composition
TOKUYAMA CORP79 citations95
US5629559AMay 13, 1997
Package for semiconductor device
TOKUYAMA CORP76 citations95
US5780154AJul 14, 1998
Boron nitride fiber and process for production thereof
TOKUYAMA CORP84 citations94
US5609675AMar 11, 1997
Inorganic composition
TOKUYAMA CORP113 citations94
US7825422B2Nov 2, 2010
Ceramic substrate for mounting a light emitting element and method for manufacturing the same
TOKUYAMA CORP20 citations93
US7718456B2May 18, 2010
Package for housing light-emitting element and method for manufacturing package for housing light-emitting element
TOKUYAMA CORP22 citations93
US6060021AMay 9, 2000
Method of storing trichlorosilane and silicon tetrachloride
TOKUYAMA CORP31 citations93
US5910516AJun 8, 1999
Process for production of photochromic cured product
TOKUYAMA CORP89 citations93
US5904981AMay 18, 1999
Polycrystal silicon rod having an improved morphyology
TOKUYAMA CORP21 citations93
US5783271AJul 21, 1998
Biodegradable alipathic polyster, melt-extrusion film thereof, and process for the production thereof
TOKUYAMA CORP43 citations93
US5776416AJul 7, 1998
Cyclone and fluidized bed reactor having same
TOKUYAMA CORP27 citations93
US5665473ASep 9, 1997
Package for mounting a semiconductor device
TOKUYAMA CORP67 citations93
US5499598AMar 19, 1996
Method for producing a silicon rod
TOKUYAMA CORP24 citations93
US6932954B2Aug 23, 2005
Method for producing silicon
TOKUYAMA CORP29 citations92
US6933327B2Aug 23, 2005
Dental curable composition
TOKUYAMA CORP34 citations92
US6878853B2Apr 12, 2005
Process for preparing dihalogenated adamantanes
TOKUYAMA CORP27 citations92
US6861144B2Mar 1, 2005
Polycrystalline silicon and process and apparatus for producing the same
TOKUYAMA CORP26 citations92
US6677389B2Jan 13, 2004
Cationized silica dispersion
TOKUYAMA CORP19 citations92
US6340374B1Jan 22, 2002
Polishing slurry and polishing method
TOKUYAMA CORP36 citations92
US6340765B1Jan 22, 2002
Chromene compound
TOKUYAMA CORP30 citations92
US6338744B1Jan 15, 2002
Polishing slurry and polishing method
TOKUYAMA CORP29 citations92
US6141135AOct 31, 2000
Photochromic composition
TOKUYAMA CORP19 citations92
US6133338AOct 17, 2000
Adhesive agent based on thiouracil derivative
TOKUYAMA CORP24 citations92
US5952400ASep 14, 1999
Dental soft relining material, denture and method of repairing denture
TOKUYAMA CORP29 citations92
US5866631AFeb 2, 1999
Dental primer composition and polymerization catalyst
TOKUYAMA CORP51 citations92
US5808100ASep 15, 1998
Chromene compounds and photochromic materials
TOKUYAMA CORP34 citations92
US5744511AApr 28, 1998
Visible ray polymerization initiator and visible ray polymerizable composition
TOKUYAMA CORP37 citations92
US6723859B2Apr 20, 2004
Chromene compound
TOKUYAMA CORP45 citations91
US6469076B1Oct 22, 2002
Chromene compounds
TOKUYAMA CORP23 citations91
US6187701B1Feb 13, 2001
Dental porcelain
TOKUYAMA CORP36 citations91
US5879591AMar 9, 1999
Process for production of photochromic cured product
TOKUYAMA CORP30 citations91
US5556931ASep 17, 1996
Polymerizable composition and organic glass
TOKUYAMA CORP49 citations91
US5476912ADec 19, 1995
Silicone-modified acrylic copolymer and adhesive thereof
TOKUYAMA CORP22 citations91
US5475074ADec 12, 1995
Polymerizable composition, organic glass and ophthalmic lens
TOKUYAMA CORP42 citations91
US5473120ADec 5, 1995
Multilayer board and fabrication method thereof
TOKUYAMA CORP136 citations91
US5445862AAug 29, 1995
Porous film and process for production thereof
TOKUYAMA CORP43 citations91
US7521004B2Apr 21, 2009
Chromene compound
TOKUYAMA CORP22 citations90
US6815470B2Nov 9, 2004
Dental catalyst for chemical polymerization and use thereof
TOKUYAMA CORP27 citations90
US6740267B1May 25, 2004
Method of producing ceramic crowns
TOKUYAMA CORP27 citations90
US6660784B2Dec 9, 2003
Dental catalyst for chemical polymerization and use thereof
TOKUYAMA CORP31 citations90
US6146557ANov 14, 2000
Fire resistant resin composition
TOKUYAMA CORP64 citations90
US5739177AApr 14, 1998
Dental composition
TOKUYAMA CORP31 citations90
US5443959AAug 22, 1995
Method of assaying fibrinogen, dry reagent therefor, and process for the preparation thereof
TOKUYAMA CORP50 citations90
US5395566AMar 7, 1995
Photochromic composition
TOKUYAMA CORP47 citations90
US6720067B2Apr 13, 2004
Polypropylene base porous film and production process for the same
TOKUYAMA CORP20 citations89
US6417264B1Jul 9, 2002
Cationic polymer-modified silica dispersion and production process for the same
TOKUYAMA CORP20 citations89
Showing the top 50 of 403 patents by PatentIndex Score.