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Official data from INPI

Método de produção de nitreto de silício sinterizado de alta tenacidade.

Em AnáliseInvention Patent
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Application data

Number

PI8406239

Type

Invention Patent

Filing

12/04/1984

Publication

06/24/1986
View on INPI

Progress at the INPI

Under appeal
  1. Filing12/04/84
  2. Publication06/24/86
  3. Examination04/19/88
  4. Refused01/02/90
  5. Grant
  6. In force

The application was refused by the INPI on 01/02/1990. The invention was never patented.

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Latest action published by the INPI: 04/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cerâmica e Velas de Ignição NGK do Brasil Ltda

SP, BR

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Inventors

M. Y. (pessoa física)

BR

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Conhecimento de parecer técnico

#7.1

04/25/1989

RPI 966

Solicitação de exame técnico

#4.1

04/19/1988

RPI 913

Publicação do pedido de patente

#3.1

06/24/1986

RPI 818

Pedido de patente depositado

#2.1

02/26/1985

RPI 749

Republicação - classificação IPC

#15.11

09/22/1992

RPI 1138

Republicação - classificação IPC

#15.11

09/24/1991

RPI 1086

Indeferimento

#9.2

01/02/1990

RPI 1000

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