Concessão da patente
#16.1
04/25/1989
RPI 966
The letters patent expired on 05/24/1994: 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: 04/25/1989. We update with every new RPI gazette, published weekly.
Applicants
PHILLIPS PETROLEUM CO
Inventors
B. B. (pessoa física)
M. D. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
04/25/1989
RPI 966
#13.1
12/27/1988
RPI 949
#9.1
09/06/1988
RPI 933
#6.1
03/08/1983
RPI 646
10/27/1981
RPI 575
#21.1
05/24/1994
RPI 1225
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.