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Official data from INPI

PROCESSO PARA A PURIFICAÇÃO DE ALUMÍNIO QUE CONTÉM IMPUREZAS

ConcedidaInvention Patent

Application data

Number

PI8304679

Type

Invention Patent

Filing

08/29/1983

Publication

04/10/1984

Progress at the INPI

  1. Filing08/29/83
  2. Publication04/10/84
  3. Examination09/18/84
  4. Allowance09/01/87
  5. Grant03/29/88
  6. Terminated10/02/90

The patent was granted on 03/29/1988 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: 03/29/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ALUMINUM COMPANY OF AMERICA

See this company's full portfolio

Inventors

E. B. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Priority claims

US

412.833 · 08/30/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/29/1988

RPI 910

Notificação para pagamento de retribuição

#13.1

12/29/1987

RPI 897

Deferimento

#9.1

09/01/1987

RPI 880

Exigência - art. 36 da LPI

#6.1

07/01/1986

RPI 819

Exigência - art. 36 da LPI

#6.1

08/20/1985

RPI 774

Solicitação de exame técnico

#4.1

09/18/1984

RPI 726

Publicação do pedido de patente

#3.1

04/10/1984

RPI 703

Anuidade - prazo legal encerrado

#18.2

10/02/1990

RPI 1035

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