Concessão da patente
#16.1
11/28/1989
RPI 997
Application data
Number
PI8307144Type
Filing
Publication
The letters patent expired on 07/01/2008: 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: 11/28/1989. We update with every new RPI gazette, published weekly.
Applicants
Exxon Research And Engineering Company
US
Inventors
A. G. (pessoa física)
US
S. B. (pessoa física)
US
IPC Classification
Priority claims
US
453,143 · 12/27/1982
US
550,977 · 11/16/1983
Publications in the Brazilian Industrial Property Gazette (RPI).
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RPI 997
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Procedimento automático de reclassificação. As classificações IPC anteriores eram: C08G 73/06; C08L 79/02; C10M 1/28; C10M 3/22; C10L 1/22.
03/27/2018
RPI 2464
#21.1
Patente extinta em 26/12/98
07/01/2008
RPI 1956
From the same holder
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