Solicitação de exame técnico
#4.1
11/07/1989
RPI 994
Application data
Number
PI8706765Type
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: 11/07/1989. We update with every new RPI gazette, published weekly.
Applicants
NGK Spark Plug Co. Ltd
JP
Inventors
K. O. (pessoa física)
JP
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
11/07/1989
RPI 994
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07/19/1988
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03/29/1988
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Patente extinta em 09/12/2002
07/29/2008
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09/28/1993
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#13.1
06/08/1993
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02/24/1993
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07/21/1992
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