16.3
07/24/1984
RPI 718
The letters patent expired on 07/20/1993: 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: 07/24/1984. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
G. R. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
07/24/1984
RPI 718
#16.1
04/24/1984
RPI 705
#13.1
02/14/1984
RPI 695
#9.1
11/01/1983
RPI 680
#15.11
01/11/1983
RPI 638
#6.1
11/09/1982
RPI 629
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: B01J 23/76; C07B 3/00; C07C 11/16; C07C 15/46; C07C 67/00.
03/27/2018
RPI 2464
#21.1
07/20/1993
RPI 1181
From the same holder
Same category
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