Solicitação de exame técnico
#4.1
10/18/1988
RPI 939
Application data
Number
PI8602692Type
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: 10/18/1988. We update with every new RPI gazette, published weekly.
Applicants
Hitachi, Ltd
JP
Inventors
K. M. (pessoa física)
JP
K. H. (pessoa física)
JP
S. M. (pessoa física)
JP
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
10/18/1988
RPI 939
#3.1
02/03/1987
RPI 850
#2.1
12/23/1986
RPI 844
#21.1
Patente extinta em 10/06/2001
07/22/2008
RPI 1959
#15.11
03/28/1995
RPI 1269
#16.1
09/28/1993
RPI 1191
#9.1
05/18/1993
RPI 1172
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.