16.3
02/14/1984
RPI 695
The letters patent expired on 05/02/1995: 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: 02/14/1984. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
P. W. (pessoa física)
Publications in the Brazilian Industrial Property Gazette (RPI).
02/14/1984
RPI 695
#16.1
11/29/1983
RPI 684
#13.1
09/27/1983
RPI 675
#9.1
05/10/1983
RPI 655
#4.1
08/17/1982
RPI 617
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 121/75; A01N 37/34; C07C 67/00; C07C 253/00.
03/27/2018
RPI 2464
#21.1
05/02/1995
RPI 1274
From the same holder
Same category
Patent monitoring
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