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Official data from INPI

PROCESSO PARA VERIFICAR,SEM DESTRUICAO DOS ESPECIMENS,A DISTRIBUICAO DO SILICIO PRIMARIO NA SUPERFICIE DE LIGAS DE ALUMINIO CONTENDO SILICIO

Em AnáliseInvention Patent

Application data

Number

PI7901161

Type

Invention Patent

Filing

03/02/1978

Publication

-

Progress at the INPI

  1. Filing03/02/78
  2. Publication
  3. Examination10/13/81
  4. Allowance07/13/82
  5. Grant02/22/83
  6. Terminated05/17/88

The patent was granted on 02/22/1983 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 05/17/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MAHLE GMBH

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Inventors

R. M. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/17/1988

RPI 917

Concessão da patente

#16.1

02/22/1983

RPI 644

Notificação para pagamento de retribuição

#13.1

11/30/1982

RPI 632

Deferimento

#9.1

07/13/1982

RPI 612

Solicitação de exame técnico

#4.1

10/13/1981

RPI 573

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