Inventor
TSUKUMA KOJI
JP30 patents
⚠️ This page may combine multiple inventors who share the name “TSUKUMA KOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSOH CORP
15 patentsUS7538055B2May 26, 2009
Transparent zirconia sintered body
TOSOH CORP26 citations92
US5972488AOct 26, 1999
Opaque quartz glass and process for production thereof
TOSOH CORP37 citations92
US6133178AOct 17, 2000
High purity transparent silica glass
TOSOH CORP24 citations90
US4938788AJul 3, 1990
Method of producing uniform silica glass block
TOSOH CORP29 citations90
US5665133ASep 9, 1997
Process for production of pure transparent quartz
TOSOH CORP32 citations89
US4915625AApr 10, 1990
Ceramic orthodontic bracket
TOSOH CORP38 citations89
US5585173ADec 17, 1996
High-purity, opaque quartz glass, method for producing same and use thereof
TOSOH CORP40 citations87
US7888279B2Feb 15, 2011
High toughness translucent alumina sintered body, method for producing the same, and its uses
TOSOH CORP10 citations83
US7217406B2May 15, 2007
Lithium-manganese composite oxide granular secondary particle, method for production thereof and use thereof
TOSOH CORP11 citations81
US5028967AJul 2, 1991
Achromatic lens for ultraviolet rays
TOSOH CORP18 citations80
US5229336AJul 20, 1993
Method of producing oxynitride glass
TOSOH CORP17 citations74
US6405563B1Jun 18, 2002
Opaque silica glass article having transparent portion and process for producing same
TOSOH CORP8 citations73
US10696022B2Jun 30, 2020
Composite plate and production method therefor
TOSOH CORP0 citations50
US10682831B2Jun 16, 2020
Composite plate and method for producing same
TOSOH CORP0 citations50
US9919971B2Mar 20, 2018
Zirconia sintered body and use thereof
TOSOH CORP1 citations48
TOYO SODA MFG CO LTD
5 patentsUS4758541AJul 19, 1988
Zirconia sintered body of improved light transmittance
TOYO SODA MFG CO LTD50 citations96
US4587225AMay 6, 1986
High-strength zirconia type sintered body
TOYO SODA MFG CO LTD132 citations95
US4666467AMay 19, 1987
High-strength metal working tool made of a zirconia-type sintered material
TOYO SODA MFG CO LTD24 citations82
US4774041ASep 27, 1988
High-strength zirconia type sintered body and process for preparation thereof
TOYO SODA MFG CO LTD22 citations81
US4690910ASep 1, 1987
Sintered product of zirconia and method of producing the same
TOYO SODA MFG CO LTD22 citations81
YAMASHITA ISAO
4 patentsUS9249058B2Feb 2, 2016
High-strength transparent zirconia sintered body, process for producing the same, and uses thereof
YAMASHITA ISAO10 citations82
US8722555B2May 13, 2014
High-strength transparent zirconia sintered body, process for producing the same, and uses thereof
YAMASHITA ISAO12 citations82
US8785008B2Jul 22, 2014
Zirconia sintered bodies with high total light transmission and high strength, uses of the same, and process for producing the same
YAMASHITA ISAO11 citations81
US8481439B2Jul 9, 2013
Colored alumina sintered body of high toughness and high translucency, and its production method and its uses
YAMASHITA ISAO5 citations71
TSUKUMA KOJI
3 patentsUS9249057B2Feb 2, 2016
Red light transmitting zirconia sintered body, method for producing the same, member comprising the sintered body, and jewelry goods and exterior component using the member
TSUKUMA KOJI3 citations71
US8133051B2Mar 13, 2012
Orthodontic bracket and process for producing the same
TSUKUMA KOJI3 citations58
US8215019B2Jul 10, 2012
Process for producing an orthodontic bracket
TSUKUMA KOJI0 citations48