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Official data from INPI

PROCESSO DE RECUPERAÇÃO DE VALORES DE FLUORETO DE MATERIAIS CARBONÁCEOS DE RE FUGO DE CATODO

ConcedidaInvention Patent

Application data

Number

PI8207685

Type

Invention Patent

Filing

04/27/1982

Publication

04/12/1983

Progress at the INPI

  1. Filing04/27/82
  2. Publication04/12/83
  3. Examination11/01/83
  4. Allowance12/29/87
  5. Grant08/29/89
  6. Terminated07/18/95

The patent was granted on 08/29/1989 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Comalco Aluminium Limited

AU

See this company's full portfolio

Inventors

B. G. (pessoa física)

H. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

263.438 · 05/14/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

15.17

04/25/1989

RPI 966

Retificação

#15.3

12/20/1988

RPI 948

Deferimento

#9.1

12/29/1987

RPI 897

Exigência - art. 36 da LPI

#6.1

09/16/1986

RPI 830

14.1

11/12/1985

RPI 786

Exigência - art. 36 da LPI

#6.1

03/05/1985

RPI 750

Solicitação de exame técnico

#4.1

11/01/1983

RPI 680

Notificação de entrada na fase nacional - PCT

#1.3

04/12/1983

RPI 651

Anuidade - prazo legal encerrado

#18.2

07/18/1995

RPI 1285

Pedido de licença compulsória

#20.1

07/30/1991

RPI 1078

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