Concessão da patente
#16.1
03/27/1984
RPI 701
The letters patent expired on 08/19/2008: 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: 03/27/1984. We update with every new RPI gazette, published weekly.
Applicants
ASHLAND OIL, INC
US
Inventors
C. W. (pessoa física)
US
IPC Classification
Priority claims
US
753.400 · 12/22/1976
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
03/27/1984
RPI 701
#13.1
12/20/1983
RPI 687
#9.1
08/30/1983
RPI 671
#6.1
12/28/1982
RPI 636
03/16/1982
RPI 595
#6.1
02/09/1982
RPI 590
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: B01J 31/12; C07B 3/00; C07B 61/00; C07C 67/00; C07C 313/00; C07C 319/24; C07C 321/14; C07C 321/28; C07D 487/22; C07F 9/00; C07F 15/06; C09B 47/04; C09B 47/06; C10G 27/06; C10G 45/04; H01B 5/16; C07C 319/00; C07C 321/00; C07D 487/00; C07F 15/00; C10G 45/02.
03/27/2018
RPI 2464
#21.1
Patente extinta em 22/12/92
08/19/2008
RPI 1963
From the same holder
Same category
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