Concessão da patente
#16.1
02/28/1989
RPI 958
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: 02/28/1989. We update with every new RPI gazette, published weekly.
Applicants
CELANESE CORP
Inventors
E. R. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
02/28/1989
RPI 958
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09/06/1988
RPI 933
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05/17/1988
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08/18/1987
RPI 878
#6.1
08/02/1983
RPI 667
#6.1
11/03/1982
RPI 628
#6.1
12/01/1981
RPI 580
#21.1
09/21/1993
RPI 1190
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Same category
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