Concessão da patente
#16.1
07/26/1983
RPI 666
The letters patent expired on 11/30/1993: 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: 07/26/1983. We update with every new RPI gazette, published weekly.
Applicants
EXXON RESEARCH ENGINEERING CO
Inventors
L. A. (pessoa física)
T. R. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
07/26/1983
RPI 666
#13.1
05/24/1983
RPI 657
#9.1
01/11/1983
RPI 638
09/28/1982
RPI 623
#6.1
07/20/1982
RPI 613
10/06/1981
RPI 572
#21.1
11/30/1993
RPI 1200
From the same holder
Same category
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