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Official data from INPI

PROCESSO PARA REVISTIR UMA CELULA ELETROLITICA DE ALUMINIO

Em AnáliseInvention Patent

Application data

Number

PI8000247

Type

Invention Patent

Filing

01/17/1979

Publication

-

Progress at the INPI

  1. Filing01/17/79
  2. Publication
  3. Examination03/09/82
  4. Allowance10/23/84
  5. Grant04/30/85
  6. Terminated09/25/90

The patent was granted on 04/30/1985 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: 11/10/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SUMITOMO ALUMINIUM SMELTING CO

Inventors

K. N. (pessoa física)

T. T. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

11/10/1987

RPI 890

Concessão da patente

#16.1

04/30/1985

RPI 758

Notificação para pagamento de retribuição

#13.1

03/05/1985

RPI 750

Deferimento

#9.1

10/23/1984

RPI 731

Exigência - art. 36 da LPI

#6.1

05/02/1984

RPI 706

Conhecimento de parecer técnico

#7.1

04/19/1983

RPI 652

Solicitação de exame técnico

#4.1

03/09/1982

RPI 594

Anuidade - prazo legal encerrado

#18.2

09/25/1990

RPI 1034

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