Carta-patente expirada
#21.1
Patente extinta em 22/06/2009
12/26/2012
RPI 2190
Application data
Number
PI8907504Type
Filing
Publication
PCT
US1989002668 The letters patent expired on 12/26/2012: 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: 12/26/2012. We update with every new RPI gazette, published weekly.
Applicants
E.I. Du Pont de Nemours and Company
US
Inventors
V. F. (pessoa física)
US
W. S. (pessoa física)
US
W. G. (pessoa física)
US
IPC Classification
Priority claims
US
210.555 · 06/23/1988
US
324.718 · 03/17/1989
Publications in the Brazilian Industrial Property Gazette (RPI).
#21.1
Patente extinta em 22/06/2009
12/26/2012
RPI 2190
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