Concessão da patente
#16.1
02/03/1987
RPI 850
Application data
Number
PI8202717Type
Filing
Publication
The letters patent expired on 07/01/2008: 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: 02/03/1987. We update with every new RPI gazette, published weekly.
Applicants
Oxigênio do Brasil S/A.
SP, BR
Inventors
G. D. (pessoa física)
FR
M. B. (pessoa física)
FR
R. P. (pessoa física)
FR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
02/03/1987
RPI 850
#13.1
11/04/1986
RPI 837
#9.1
07/08/1986
RPI 820
#6.1
10/29/1985
RPI 784
#4.1
04/16/1985
RPI 756
#3.1
04/19/1983
RPI 652
#2.1
06/22/1982
RPI 609
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: C04B 21/00; C04B 31/02; C04B 31/30.
03/27/2018
RPI 2464
#21.1
Patente extinta em 11/05/97
07/01/2008
RPI 1956
#25.5
01/06/1998
RPI 1411
From the same holder
Same category
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