20.4
08/16/1983
RPI 669
The letters patent expired on 07/13/1993: 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: 08/16/1983. We update with every new RPI gazette, published weekly.
Applicants
HOOKER CHEMICALS PLASTICS CORP
Inventors
L. H. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
08/16/1983
RPI 669
#16.1
02/22/1983
RPI 644
#13.1
12/14/1982
RPI 634
#9.1
08/03/1982
RPI 615
#6.1
10/20/1981
RPI 574
#21.1
07/13/1993
RPI 1180
From the same holder
Same category
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