Solicitação de exame técnico
#4.1
06/09/1987
RPI 868
Application data
Number
PI8603812Type
Filing
Publication
The letters patent expired on 07/22/2008: 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: 06/09/1987. We update with every new RPI gazette, published weekly.
Applicants
Allied Colloids Limited
GB
Ciba Specialty Chemicals Water Treatments Limited
GB
Inventors
D. F. (pessoa física)
GB
M. H. (pessoa física)
GB
IPC Classification
Priority claims
GB
8520218 · 08/12/1985
GB
8603656 · 02/14/1986
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
06/09/1987
RPI 868
#3.1
03/17/1987
RPI 856
#2.1
01/06/1987
RPI 846
#21.1
Patente extinta em 11/08/2001
07/22/2008
RPI 1959
#25.4
Alterado de: Allied Colloids Limited
09/18/2001
RPI 1602
#16.1
12/26/1995
RPI 1308
#13.1
10/31/1995
RPI 1300
#9.1
06/20/1995
RPI 1281
#6.1
09/14/1993
RPI 1189
#6.1
02/09/1993
RPI 1158
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