Deferimento
#9.1
09/05/1989
RPI 985
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Official data from INPI
MÉTODO DE PRODUÇÃO DE NITRETO DE SILÍCIO SINTERIZADO
DeferidaInvention Patent
Application data
Number
PI8405386Type
Invention Patent
Filing
10/19/1984
Publication
05/27/1986
Progress at the INPI
- Filing10/19/84
- Publication05/27/86
- Examination04/12/88
- Allowance09/05/89
- Grant04/24/90
- Terminated06/27/95
The patent was granted on 04/24/1990 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.
Talk to a specialistLatest action published by the INPI: 09/05/1989. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
Cerâmica e Velas de Ignição NGK do Brasil Ltda
SP, BR
Inventors
M. Y. (pessoa física)
BR
Technical data
IPC Classification
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Exigência - art. 36 da LPI
#6.1
03/07/1989
RPI 959
Solicitação de exame técnico
#4.1
04/12/1988
RPI 912
Publicação do pedido de patente
#3.1
05/27/1986
RPI 814
Pedido de patente depositado
#2.1
01/08/1985
RPI 742
Anuidade - prazo legal encerrado
#18.2
06/27/1995
RPI 1282
Concessão da patente
#16.1
04/24/1990
RPI 1015
Notificação para pagamento de retribuição
#13.1
01/09/1990
RPI 1001
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