Concessão da patente
#16.1
11/28/1989
RPI 997
The letters patent expired on 11/15/1994: 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
Sérgio Krawtschenko, brasileiro, engenheiro
SP, BR
Inventors
S. E. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
11/28/1989
RPI 997
08/29/1989
RPI 984
#11.4
11/08/1988
RPI 942
#13.1
07/19/1988
RPI 926
#9.1
03/15/1988
RPI 908
#6.1
08/18/1987
RPI 878
#7.1
05/20/1986
RPI 813
#4.1
03/12/1985
RPI 751
#3.1
10/18/1983
RPI 678
#2.1
04/20/1982
RPI 600
#15.11
Reclassificação automática - A classificação anterior era: F24J 2/46
10/05/2021
RPI 2648
#15.11
01/12/2010
RPI 2036
#21.1
11/15/1994
RPI 1250
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