Pedido de licença compulsória
#20.1
11/01/1983
RPI 680
The letters patent expired on 08/03/1993: 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: 11/01/1983. We update with every new RPI gazette, published weekly.
Applicants
TENNECO CHEMICALLS INC
Inventors
H. J. (pessoa física)
S. H. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#20.1
11/01/1983
RPI 680
#16.1
01/26/1982
RPI 588
#21.1
08/03/1993
RPI 1183
Same category
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