Carta-patente expirada
#21.1
Patente extinta em 20/11/2004
12/29/2009
RPI 2034
Application data
Number
PI8907906Type
Filing
Publication
PCT
US1989005278 The letters patent expired on 12/29/2009: 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: 12/29/2009. We update with every new RPI gazette, published weekly.
Applicants
Exxon Chemical Patents Inc
US
Inventors
A. D. (pessoa física)
US
H. W. (pessoa física)
US
K. P. (pessoa física)
US
T. C. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
#21.1
Patente extinta em 20/11/2004
12/29/2009
RPI 2034
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12/31/1996
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06/25/1996
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05/23/1995
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06/15/1993
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07/21/1992
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