Solicitação de exame técnico
#4.1
06/09/1987
RPI 868
Application data
Number
PI8503670Type
Filing
Publication
The letters patent expired on 07/15/2008: 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
Oxiteno S/A Industria e Comércio
SP, BR
Inventors
F. P. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
06/09/1987
RPI 868
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03/10/1987
RPI 855
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09/16/1986
RPI 830
#21.1
Patente extinta em 31/07/2000
07/15/2008
RPI 1958
#16.1
04/28/1992
RPI 1117
#15.11
11/05/1991
RPI 1092
#13.1
10/22/1991
RPI 1090
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06/25/1991
RPI 1073
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