04/11/1989
RPI 964
Pedido de patente depositado
2.1
Invention PatentPI8900827
Domnick Hunter Filters Limited+1
The letters patent expired on 12/15/2009: 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: 04/11/1989. We update with every new RPI gazette, published weekly.
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
04/11/1989
RPI 964
2.1
12/15/2009
RPI 2032
21.1
Patente extinta em 23/02/2004
11/26/1996
RPI 1356
16.1
07/02/1996
RPI 1335
13.1
01/09/1996
RPI 1310
9.1
02/07/1995
RPI 1262
6.1
09/21/1993
RPI 1190
09/21/1993
RPI 1190
07/27/1993
RPI 1182
04/20/1993
RPI 1168
10/13/1992
RPI 1141
4.1
10/02/1990
RPI 1035
3.1
From the same holder