Inventor
YAMAMOTO TSUNEO
JP20 patents
⚠️ This page may combine multiple inventors who share the name “YAMAMOTO TSUNEO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KANEGAFUCHI CHEMICAL IND
6 patentsUS4742099AMay 3, 1988
Polyimide film and process for producing same
KANEGAFUCHI CHEMICAL IND34 citations92
US4832772AMay 23, 1989
Method for surface treatment of film
KANEGAFUCHI CHEMICAL IND22 citations81
US4755424AJul 5, 1988
Polyimide film having improved adhesive properties
KANEGAFUCHI CHEMICAL IND17 citations73
US4454276AJun 12, 1984
Polyamide acid composition for preparing polyimide and process for preparing polyimide from the same
KANEGAFUCHI CHEMICAL IND16 citations71
US4808468AFeb 28, 1989
Polyimide film and its manufacturing method
KANEGAFUCHI CHEMICAL IND8 citations67
US4515915AMay 7, 1985
Polyamide acid composition for preparing polyimide
KANEGAFUCHI CHEMICAL IND3 citations60
ULVAC COATING CORP
3 patentsUS5952128ASep 14, 1999
Phase-shifting photomask blank and method of manufacturing the same as well as phase-shifting photomask
ULVAC COATING CORP48 citations96
US6228541B1May 8, 2001
Phase-shifting photomask blank, phase-shifting photomask, method for producing them and apparatus for manufacturing the blank
ULVAC COATING CORP19 citations92
US6689515B2Feb 10, 2004
Phase-shifting photomask blank, phase-shifting photomask, method for producing them and apparatus for manufacturing the blank
ULVAC COATING CORP13 citations84
TAKEMOTO OIL & FAT CO LTD
3 patentsUS5290869AMar 1, 1994
Cement dispersion agents
TAKEMOTO OIL & FAT CO LTD22 citations92
US5087648AFeb 11, 1992
Method of providing fluidizing property to hydraulic cement compositions using cement dispersion agents comprising water soluble vinyl copolymer
TAKEMOTO OIL & FAT CO LTD22 citations90
US4962173AOct 9, 1990
Cement dispersion agents comprising water soluble vinyl copolymer
TAKEMOTO OIL & FAT CO LTD24 citations90