Concessão da patente
#16.1
01/25/1983
RPI 640
The letters patent expired on 05/03/1994: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.
Talk to a specialistLatest action published by the INPI: 01/25/1983. We update with every new RPI gazette, published weekly.
Applicants
SUMITOMO CHEMICAL CO
Inventors
M. T. (pessoa física)
S. T. (pessoa física)
W. S. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
01/25/1983
RPI 640
#13.1
11/30/1982
RPI 632
#9.1
07/13/1982
RPI 612
10/27/1981
RPI 575
#21.1
05/03/1994
RPI 1222
From the same holder
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