Pedido de certificado de adição de invenção
#5.1
11/17/1987
RPI 891
Application data
Number
PI8403194Type
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: 11/17/1987. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
J. D. (pessoa física)
GB
IPC Classification
Priority claims
GB
8317696 · 06/29/1983
Publications in the Brazilian Industrial Property Gazette (RPI).
#5.1
11/17/1987
RPI 891
#4.1
07/21/1987
RPI 874
#3.1
06/11/1985
RPI 764
#2.1
09/04/1984
RPI 724
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: C12P 19/06; C12R 1/64; C09K 7/02.
03/27/2018
RPI 2464
#21.1
Patente extinta em 28/06/99
07/08/2008
RPI 1957
#16.1
10/29/1996
RPI 1352
#13.1
06/25/1996
RPI 1334
#9.1
12/12/1995
RPI 1306
#6.1
06/27/1995
RPI 1282
#6.1
02/22/1994
RPI 1212
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.