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Official data from INPI

CÉLULA DE REDUÇÃO DE ALUMÍNIO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9000794

Type

Invention Patent

Filing

02/20/1990

Publication

02/05/1991

Progress at the INPI

  1. Filing02/20/90
  2. Publication02/05/91
  3. Examination04/28/92
  4. Allowance09/29/98
  5. Grant12/14/99
  6. Expired01/02/13

The letters patent expired on 01/02/2013: 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: 01/02/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Comalco Aluminium Limited

AU

See this company's full portfolio

Inventors

D. J. (pessoa física)

AU

G. H. (pessoa física)

AU

I. S. (pessoa física)

AU

R. S. (pessoa física)

AU

Technical data

IPC Classification

Priority claims

AU

PJ 2826 · 02/20/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 20/02/2010

01/02/2013

RPI 2191

Concessão da patente

#16.1

12/14/1999

RPI 1510

Deferimento

#9.1

09/29/1998

RPI 1449

Exigência - art. 36 da LPI

#6.1

01/13/1998

RPI 1412

6.2

04/11/1995

RPI 1271

Solicitação de exame técnico

#4.1

04/28/1992

RPI 1117

Publicação do pedido de patente

#3.1

02/05/1991

RPI 1053

Pedido de patente depositado

#2.1

05/22/1990

RPI 1019

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