Solicitação de exame técnico
#4.1
03/31/1987
RPI 858
Application data
Number
PI8601359Type
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: 03/31/1987. We update with every new RPI gazette, published weekly.
Applicants
Hitachi, Ltd
JP
Inventors
T. N. (pessoa física)
JP
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
03/31/1987
RPI 858
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12/02/1986
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10/21/1986
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Patente extinta em 26/03/2001
07/22/2008
RPI 1959
#16.1
06/30/1992
RPI 1126
#13.1
01/07/1992
RPI 1101
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09/03/1991
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