Concessão da patente
#16.1
02/28/1989
RPI 958
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: 02/28/1989. We update with every new RPI gazette, published weekly.
Applicants
Imperial Chemical Industries Plc.
GB
Inventors
C. R. (pessoa física)
M. M. (pessoa física)
Y. B. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
02/28/1989
RPI 958
#13.1
11/29/1988
RPI 945
#9.1
08/02/1988
RPI 928
#6.1
12/08/1987
RPI 894
#7.1
04/05/1983
RPI 650
10/27/1981
RPI 575
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 121/00; C07C 69/74; C07C 69/76.
03/20/2018
RPI 2463
#21.1
05/24/1994
RPI 1225
From the same holder
Same category
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