Solicitação de exame técnico
#4.1
06/16/1987
RPI 869
Application data
Number
PI8601346Type
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: 06/16/1987. We update with every new RPI gazette, published weekly.
Applicants
NGK Insulators, Ltd.
JP
Inventors
H. M. (pessoa física)
JP
I. Y. (pessoa física)
JP
N. T. (pessoa física)
JP
Y. N. (pessoa física)
JP
IPC Classification
Priority claims
JP
62.282/85 · 03/27/1985
JP
62.283/85 · 03/27/1985
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
06/16/1987
RPI 869
#3.1
12/02/1986
RPI 841
#2.1
10/21/1986
RPI 835
#21.1
Patente extinta em 26/03/2001
07/22/2008
RPI 1959
#16.1
09/24/1996
RPI 1347
#9.1
01/02/1996
RPI 1309
#7.1
08/03/1993
RPI 1183
11/12/1991
RPI 1093
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.