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Official data from INPI

PROCESSO DE SIMETRIZAÇÃO DO CAMPO MAGNÉTICO VERTICAL NAS CUBAS DE ELETRÓLISE ÍGNEA DISPOSTAS ATRAVESSADAS.

ConcedidaInvention Patent

Application data

Number

PI8006605

Type

Invention Patent

Filing

02/11/1980

Publication

-

Progress at the INPI

  1. Filing02/11/80
  2. Publication
  3. Examination08/10/82
  4. Allowance05/12/87
  5. Grant11/24/87
  6. Expired11/14/95

The letters patent expired on 11/14/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 11/24/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. P. (pessoa física)

FR

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Inventors

D. J. (pessoa física)

M. P. (pessoa física)

Technical data

IPC Classification

Priority claims

FR

80/00021 · 02/14/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/24/1987

RPI 892

Notificação para pagamento de retribuição

#13.1

09/22/1987

RPI 883

Deferimento

#9.1

05/12/1987

RPI 864

Exigência - art. 36 da LPI

#6.1

06/10/1986

RPI 816

Exigência - art. 36 da LPI

#6.1

07/02/1985

RPI 767

Exigência - art. 36 da LPI

#6.1

01/03/1984

RPI 689

Solicitação de exame técnico

#4.1

08/10/1982

RPI 616

Carta-patente expirada

#21.1

11/14/1995

RPI 1302

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