Concessão da patente
#16.1
09/25/1984
RPI 727
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: 09/25/1984. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
C. T. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
09/25/1984
RPI 727
#13.1
06/26/1984
RPI 714
#9.1
03/07/1984
RPI 698
#6.1
08/23/1983
RPI 670
#15.11
04/26/1983
RPI 653
#6.1
02/22/1983
RPI 644
04/06/1982
RPI 598
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 121/00; A01N 9/20; C07C 255/00.
03/27/2018
RPI 2464
#21.1
05/24/1994
RPI 1225
From the same holder
Same category
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