Inventor
YAMAFUJI TETSUO
JP11 patents
⚠️ This page may combine multiple inventors who share the name “YAMAFUJI TETSUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYAMA CHEMICAL CO LTD
10 patentsUS5877174AMar 2, 1999
2,3-diketopiperazine derivatives or their salts
TOYAMA CHEMICAL CO LTD136 citations97
US4704459ANov 3, 1987
Process for producing 1-substituted aryl-1,4-dihydro-4-oxonaphthyridine derivatives, and processes for producing the intermediates
TOYAMA CHEMICAL CO LTD67 citations94
US4851535AJul 25, 1989
Nicotinic acid derivatives
TOYAMA CHEMICAL CO LTD24 citations91
US5719150AFeb 17, 1998
1,2-ethanediol derivative and salt thereof, process for producing the same, and cerebral function-improving agent comprising the same
TOYAMA CHEMICAL CO LTD10 citations81
US5658904AAug 19, 1997
1,2-ethanediol derivative and salt thereof and cerebral function-improving agent comprising the same
TOYAMA CHEMICAL CO LTD13 citations81
US5612381AMar 18, 1997
1,2-ethanediol derivative and salt thereof process for producing the same, and cerebral function-improving agent comprising the same
TOYAMA CHEMICAL CO LTD11 citations81
US5280032AJan 18, 1994
1,2-ethanediol derivative and salt thereof, process for producing the same, and cerebral function-improving agent comprising the same
TOYAMA CHEMICAL CO LTD16 citations81
US5872117AFeb 16, 1999
1,2-ethanediol derivative and salt thereof, process for producing the same, and cerebral function-improving agent comprising the same
TOYAMA CHEMICAL CO LTD7 citations73
US5472984ADec 5, 1995
1,2-ethanediol derivative and salt thereof and cerebral function-improving agent comprising the same
TOYAMA CHEMICAL CO LTD10 citations73
US5380878AJan 10, 1995
Benzo[b]thiophen-5-yl derivative and process for producing the same
TOYAMA CHEMICAL CO LTD1 citations49