Publicação do pedido de patente
#3.1
10/24/1989
RPI 992
Application data
Number
PI8901029Type
Filing
Publication
The letters patent expired on 12/18/2012: 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: 10/24/1989. We update with every new RPI gazette, published weekly.
Applicants
Elkem a/s
NO
Inventors
S. A. (pessoa física)
NO
Publications in the Brazilian Industrial Property Gazette (RPI).
#3.1
10/24/1989
RPI 992
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Procedimento automático de reclassificação. As classificações IPC anteriores eram: C01G 45/02; C09K 7/04.
03/27/2018
RPI 2464
#21.1
Patente extinta em 28/12/2009
12/18/2012
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12/28/1999
RPI 1512
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06/26/1990
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