Solicitação de exame técnico
#4.1
10/10/1989
RPI 990
Application data
Number
PI8600892Type
Filing
Publication
The letters patent expired on 07/22/2008: 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: 10/10/1989. We update with every new RPI gazette, published weekly.
Applicants
V.W. Kaiser Engineering, Inc.
US
Inventors
J. S. (pessoa física)
US
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
10/10/1989
RPI 990
#3.1
09/08/1987
RPI 881
#2.1
08/12/1986
RPI 825
#21.1
Patente extinta em 28/02/2001
07/22/2008
RPI 1959
#16.1
04/27/1993
RPI 1169
01/26/1993
RPI 1156
#12.1
05/14/1991
RPI 1067
#15.11
04/30/1991
RPI 1065
#9.1
02/05/1991
RPI 1053
#6.1
08/14/1990
RPI 1028
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.