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Official data from INPI

CÉLULA ELETROLÍTICA PARA A PRODUÇÃO DE UM METAL

PublicadaInvention Patent

Application data

Number

PI8900065

Type

Invention Patent

Filing

01/09/1989

Publication

09/05/1989

Progress at the INPI

  1. Filing01/09/89
  2. Publication09/05/89
  3. Examination06/15/93
  4. Allowance08/31/99
  5. Grant05/30/00
  6. Expired12/18/12

The letters patent expired on 12/18/2012: 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: 09/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcan International Limited

CA

See this company's full portfolio

Inventors

O. S. (pessoa física)

CA

Technical data

IPC Classification

Priority claims

GB

GB 8800674 · 01/13/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

09/05/1989

RPI 985

Pedido de patente depositado

#2.1

02/21/1989

RPI 957

Carta-patente expirada

#21.1

Patente extinta em 30/05/2010

12/18/2012

RPI 2189

Concessão da patente

#16.1

05/30/2000

RPI 1534

Deferimento

#9.1

08/31/1999

RPI 1495

Conhecimento de parecer técnico

#7.1

10/28/1997

RPI 1404

Solicitação de exame técnico

#4.1

06/15/1993

RPI 1176

11.8

03/02/1993

RPI 1161

Arquivamento - Art. 33 da LPI

#11.1

12/01/1992

RPI 1148

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