Solicitação de exame técnico
#4.1
06/27/1989
RPI 975
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Application data
Number
PI8800547Type
Invention Patent
Filing
02/10/1988
Publication
09/27/1988
Progress at the INPI
- Filing02/10/88
- Publication09/27/88
- Examination06/27/89
- Allowance05/31/94
- Grant12/27/94
- Expired09/02/08
The letters patent expired on 09/02/2008: 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: 06/27/1989. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
NGK Insulators, Ltd
JP
NGK Insulators, Ltd.
JP
Inventors
A. W. (pessoa física)
JP
S. M. (pessoa física)
JP
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Publicação do pedido de patente
#3.1
09/27/1988
RPI 936
Pedido de patente depositado
#2.1
05/24/1988
RPI 918
Carta-patente expirada
#21.1
Patente extinta em 10/02/2003
09/02/2008
RPI 1965
Concessão da patente
#16.1
12/27/1994
RPI 1256
Notificação para pagamento de retribuição
#13.1
10/04/1994
RPI 1244
Deferimento
#9.1
05/31/1994
RPI 1226
Exigência - art. 36 da LPI
#6.1
10/19/1993
RPI 1194
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