Concessão da patente
#16.1
09/30/1986
RPI 832
The letters patent expired on 09/21/1993: 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: 09/30/1986. We update with every new RPI gazette, published weekly.
Applicants
EXXON RESEARCH ENGINEERING CO
Inventors
A. C. (pessoa física)
B. R. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
09/30/1986
RPI 832
#13.1
07/01/1986
RPI 819
#9.1
03/11/1986
RPI 803
#6.1
07/23/1985
RPI 770
11/17/1981
RPI 578
#7.1
10/06/1981
RPI 572
#21.1
09/21/1993
RPI 1190
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Same category
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