Solicitação de exame técnico
#4.1
10/17/1989
RPI 991
Application data
Number
PI8701944Type
Filing
Publication
The letters patent expired on 07/29/2008: 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: 10/17/1989. We update with every new RPI gazette, published weekly.
Applicants
Petróleo Brasileiro S/A - Petrobrás
RJ, BR
Inventors
A. S. (pessoa física)
BR
A. L. (pessoa física)
BR
F. C. (pessoa física)
BR
P. A. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
10/17/1989
RPI 991
#3.1
11/01/1988
RPI 941
#2.1
05/10/1988
RPI 916
#21.1
Patente extinta em 24/04/2002
07/29/2008
RPI 1960
#16.1
05/30/1995
RPI 1278
#13.1
02/07/1995
RPI 1262
#9.1
10/04/1994
RPI 1244
#6.1
06/07/1994
RPI 1227
From the same holder
Same category
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