Concessão da patente
#16.1
04/26/1988
RPI 914
The letters patent expired on 12/14/1993: 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: 04/26/1988. We update with every new RPI gazette, published weekly.
Applicants
EXXON RESEARCH ENGINEERING CO
Inventors
S. H. (pessoa física)
W. W. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
04/26/1988
RPI 914
#13.1
01/26/1988
RPI 901
#9.1
09/15/1987
RPI 882
#6.1
09/13/1983
RPI 673
#6.1
02/01/1983
RPI 641
#6.1
08/10/1982
RPI 616
10/13/1981
RPI 573
#21.1
12/14/1993
RPI 1202
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Same category
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