Solicitação de exame técnico
#4.1
08/12/1986
RPI 825
Application data
Number
PI8405200Type
Filing
Publication
The letters patent expired on 07/08/2008: 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: 08/12/1986. We update with every new RPI gazette, published weekly.
Applicants
Petróleo Brasileiro S/A - Petrobrás
RJ, BR
Inventors
A. F. (pessoa física)
BR
O. M. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
08/12/1986
RPI 825
#3.1
05/20/1986
RPI 813
#2.1
12/26/1984
RPI 740
#21.1
Patente extinta em 16/10/99
07/08/2008
RPI 1957
#16.1
02/26/1991
RPI 1056
#13.1
11/06/1990
RPI 1040
#9.1
07/24/1990
RPI 1025
#6.1
02/13/1990
RPI 1006
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.