Exigência - art. 36 da LPI
#6.1
07/25/1989
RPI 979
Application data
Number
PI8507003Type
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: 07/25/1989. We update with every new RPI gazette, published weekly.
Applicants
Hydril Company
US
Inventors
J. R. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
#6.1
07/25/1989
RPI 979
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04/19/1988
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01/06/1987
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Patente extinta em 24/09/2000
07/15/2008
RPI 1958
#16.1
08/28/1990
RPI 1030
#13.1
05/22/1990
RPI 1019
#9.1
01/23/1990
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