Solicitação de exame técnico
#4.1
08/30/1988
RPI 932
Application data
Number
PI8506402Type
Filing
Publication
The letters patent expired on 07/15/2008: 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: 08/30/1988. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
L. C. (pessoa física)
US
IPC Classification
Priority claims
US
685505 · 12/24/1984
US
685506 · 12/24/1984
US
695511 · 10/28/1985
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
08/30/1988
RPI 932
#3.1
09/02/1986
RPI 828
#2.1
03/04/1986
RPI 802
#21.1
Patente extinta em 19/12/2000
07/15/2008
RPI 1958
#16.1
04/30/1991
RPI 1065
#13.1
01/15/1991
RPI 1050
#9.1
10/02/1990
RPI 1035
#6.1
05/15/1990
RPI 1018
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.