Carta-patente expirada
#21.1
Patente extinta em 31/01/2011
05/28/2013
RPI 2212
Application data
Number
PI9100405Type
Filing
Publication
The letters patent expired on 05/28/2013: 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: 05/28/2013. We update with every new RPI gazette, published weekly.
Applicants
Exxon Chemical Patents, Inc
US
Inventors
M. S. (pessoa física)
US
IPC Classification
Priority claims
US
473,590 · 02/01/1990
Publications in the Brazilian Industrial Property Gazette (RPI).
#21.1
Patente extinta em 31/01/2011
05/28/2013
RPI 2212
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04/27/1999
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10/22/1991
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