Carta-patente expirada
#21.1
Patente extinta em 28/12/2009
12/11/2012
RPI 2188
Application data
Number
PI8807348Type
Filing
Publication
PCT
US1988000287 The letters patent expired on 12/11/2012: 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: 12/11/2012. We update with every new RPI gazette, published weekly.
Applicants
Exxon Chemical Patents, Inc
US
Inventors
A. C. (pessoa física)
CA
J. B. (pessoa física)
US
W. D. (pessoa física)
US
IPC Classification
Priority claims
US
009,794 · 02/02/1987
Publications in the Brazilian Industrial Property Gazette (RPI).
#21.1
Patente extinta em 28/12/2009
12/11/2012
RPI 2188
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