Inventor
CHANG LAURENCE W
US15 patents
⚠️ This page may combine multiple inventors who share the name “CHANG LAURENCE W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AMERICAN CYANAMID CO
13 patentsUS4439616AMar 27, 1984
Tertiary aralkyl urethanes and isocyanates derived therefrom
AMERICAN CYANAMID CO44 citations92
US5155174AOct 13, 1992
Surface-modified polyacrylonitrile fibrous substrates
AMERICAN CYANAMID CO6 citations73
US4879410ANov 7, 1989
Preparation of primary aralkyl urethanes and ureas and isocyanates derived therefrom
AMERICAN CYANAMID CO10 citations73
US4570012AFeb 11, 1986
Urethanes from tertiary aralkyl diols
AMERICAN CYANAMID CO11 citations73
US4863636ASep 5, 1989
Substituted N-hydroxyphthalimides and their use as detergent additives
AMERICAN CYANAMID CO17 citations71
US4379767AApr 12, 1983
Manufacture of isocyanates
AMERICAN CYANAMID CO13 citations70
US5306782AApr 26, 1994
Surface-modified polyacrylonitrile fibrous substrates
AMERICAN CYANAMID CO6 citations62
US5284910AFeb 8, 1994
Surface-modified polyacrylonitrile fibrous substrates
AMERICAN CYANAMID CO5 citations62
US5284911AFeb 8, 1994
Surface-modified polyacrylonitrile substrates
AMERICAN CYANAMID CO2 citations62
US5270384ADec 14, 1993
Surface-modified polyacrylonitrile fibrous substrates
AMERICAN CYANAMID CO5 citations62
US5082904AJan 21, 1992
Surface-modified polyacrylonitrile substrates
AMERICAN CYANAMID CO0 citations51
US5268421ADec 7, 1993
Surface-modified polyacrylonitrile beads
AMERICAN CYANAMID CO0 citations41
US5137983AAug 11, 1992
Surface-modified polyacrylonitrile beads
AMERICAN CYANAMID CO0 citations41