Pedido de patente depositado
#2.1
10/31/1989
RPI 993
Application data
Number
PI8903818Type
Filing
Publication
The letters patent expired on 12/26/2012: 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: 10/31/1989. We update with every new RPI gazette, published weekly.
Applicants
Praxair Technology, Inc.
US
Inventors
O. H. (pessoa física)
US
R. P. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
#2.1
10/31/1989
RPI 993
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: B01D 13/00; B01D 53/02.
03/27/2018
RPI 2464
#21.1
Patente extinta em 31/07/2009
12/26/2012
RPI 2190
#16.1
05/26/1998
RPI 1431
Referencia RPI n° 1404 de 28/10/97, publicação ( 6.7) por ter sido indevida.
04/07/1998
RPI 1424
10/28/1997
RPI 1404
#13.1
05/06/1997
RPI 1379
#9.1
01/28/1997
RPI 1365
#6.1
04/02/1996
RPI 1322
11/01/1994
RPI 1248
10/25/1994
RPI 1247
#4.1
07/16/1991
RPI 1076
#3.1
03/27/1990
RPI 1011
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