Publicação do pedido de patente
#3.1
08/08/1989
RPI 981
Application data
Number
PI8806066Type
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: 08/08/1989. We update with every new RPI gazette, published weekly.
Applicants
Exxon Chemical Patents, Inc
US
Inventors
D. C. (pessoa física)
US
E. O. (pessoa física)
US
IPC Classification
Priority claims
US
123,532 · 11/20/1987
Publications in the Brazilian Industrial Property Gazette (RPI).
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08/08/1989
RPI 981
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04/04/1989
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Patente extinta em 18/11/2008
12/18/2012
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10/28/1997
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10/14/1997
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03/11/1997
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08/06/1996
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07/18/1995
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08/27/1991
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