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Official data from INPI

PROCESSO PARA A REDUÇÃO DE ÓXIDOS DE METAL SUPERIORES PARA ÓXIDOS DE METAL INFERIORES

PublicadaInvention Patent

Application data

Number

PI8605633

Type

Invention Patent

Filing

11/14/1986

Publication

08/18/1987

Progress at the INPI

  1. Filing11/14/86
  2. Publication08/18/87
  3. Examination04/24/90
  4. Allowance11/12/91
  5. Grant08/25/92
  6. Terminated10/03/95

The patent was granted on 08/25/1992 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 08/18/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. A. (pessoa física)

DE

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Inventors

H. S. (pessoa física)

DE

M. H. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 35 40 541.4 · 11/15/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

08/18/1987

RPI 878

Pedido de patente depositado

#2.1

04/14/1987

RPI 860

Anuidade - prazo legal encerrado

#18.2

10/03/1995

RPI 1296

Concessão da patente

#16.1

08/25/1992

RPI 1134

Notificação para pagamento de retribuição

#13.1

03/31/1992

RPI 1113

Deferimento

#9.1

11/12/1991

RPI 1093

Solicitação de exame técnico

#4.1

04/24/1990

RPI 1015

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