Solicitação de exame técnico
#4.1
09/22/1987
RPI 883
Application data
Number
PI8701498Type
Filing
Publication
The letters patent expired on 07/29/2008: 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: 09/22/1987. We update with every new RPI gazette, published weekly.
Applicants
Betzdearborn Inc.
US
Grace Aquatec Química Ltda
US
W.R. Grace & Co. - Conn
US
Inventors
J. G. (pessoa física)
BR
V. G. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
09/22/1987
RPI 883
#3.2
08/18/1987
RPI 878
#2.1
07/07/1987
RPI 872
#21.1
Patente extinta em 02/04/2002
07/29/2008
RPI 1960
#25.1
Transferido de: W.R. Grace & Co. Conn
12/01/1998
RPI 1456
#25.7
Alterada a sede conforme petição INPI/RJ nº007819 de 02/04/98
11/10/1998
RPI 1453
#20.1
01/16/1996
RPI 1311
#16.1
05/30/1995
RPI 1278
#13.1
01/17/1995
RPI 1259
#9.1
09/13/1994
RPI 1241
#6.1
03/29/1994
RPI 1217
07/13/1993
RPI 1180
07/06/1993
RPI 1179
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