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Official data from INPI

PROCESSO DE COMPENSAÇÃO DO CAMPO MAGNÉTICO INDUZIDO PELA FILA VIZINHA NAS SÉRIES DE CUBAS DE ELETROLÍSE DE ALTA INTENSIDADE.

ConcedidaInvention Patent

Application data

Number

PI7902853

Type

Invention Patent

Filing

05/10/1979

Publication

-

Progress at the INPI

  1. Filing05/10/79
  2. Publication
  3. Examination
  4. Allowance08/23/83
  5. Grant02/28/84
  6. Expired07/26/94

The letters patent expired on 07/26/1994: 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: 02/28/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. P. (pessoa física)

FR

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Inventors

J. D. (pessoa física)

P. M. (pessoa física)

Technical data

IPC Classification

Priority claims

FR

P. 7814676 · 05/11/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/28/1984

RPI 697

Notificação para pagamento de retribuição

#13.1

12/13/1983

RPI 686

Deferimento

#9.1

08/23/1983

RPI 670

Exigência - art. 36 da LPI

#6.1

05/25/1982

RPI 605

Carta-patente expirada

#21.1

07/26/1994

RPI 1234

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