15.7
10/03/1989
RPI 989
The letters patent expired on 09/21/1993: 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: 10/03/1989. We update with every new RPI gazette, published weekly.
Applicants
T. C. (pessoa física)
US
Inventors
B. B. (pessoa física)
US
R. B. (pessoa física)
US
IPC Classification
Priority claims
US
690.652 · 05/27/1976
Publications in the Brazilian Industrial Property Gazette (RPI).
10/03/1989
RPI 989
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07B 13/02; C07B 13/06.
03/27/2018
RPI 2464
#21.1
09/21/1993
RPI 1190
#16.1
05/28/1991
RPI 1069
#13.1
03/12/1991
RPI 1058
#9.1
11/27/1990
RPI 1043
#6.1
06/05/1990
RPI 1021
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Same category
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