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Official data from INPI

SISTEMA PARA IMPEDIR A DECOMPOSICAO DE ARTIGOS DE CARBONETO DE SILICIO DURANTE A SINTERIZACAO

PublicadaInvention Patent
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Application data

Number

PI8700394

Type

Invention Patent

Filing

01/29/1987

Publication

08/09/1988
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Progress at the INPI

  1. Filing01/29/87
  2. Publication08/09/88
  3. Examination09/11/90
  4. Allowance
  5. Grant
  6. In force

Published on 08/09/1988, the application is awaiting technical examination at the INPI, which decides whether the invention meets the patentability requirements.

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Latest action published by the INPI: 08/09/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

KENNECOTT CORP [US]

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Inventors

K. D. (pessoa física)

K. J. (pessoa física)

Technical data

IPC Classification

C04B 35/56C04B 35/64

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

08/09/1988

RPI 929

Pedido de patente depositado

#2.1

06/02/1987

RPI 867

Retificação

#15.3

04/21/1992

RPI 1116

Solicitação de exame técnico

#4.1

09/11/1990

RPI 1032

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