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Official data from INPI

CONJUNTO DE PERFIS

Arquivada/ExtintaInvention Patent

Application data

Number

PI8905070

Type

Invention Patent

Filing

10/05/1989

Publication

04/09/1991

Progress at the INPI

  1. Filing10/05/89
  2. Publication04/09/91
  3. Examination06/01/93
  4. Allowance02/17/99
  5. Grant08/24/99
  6. Expired12/26/12

The letters patent expired on 12/26/2012: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 12/26/2012. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcoa Alumínio S/A

MG, BR

See this company's full portfolio

Inventors

H. B. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 05/10/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

08/24/1999

RPI 1494

Deferimento

#9.1

02/17/1999

RPI 1467

Exigência - art. 36 da LPI

#6.1

10/14/1997

RPI 1402

Solicitação de exame técnico

#4.1

06/01/1993

RPI 1174

Publicação do pedido de patente

#3.1

04/09/1991

RPI 1062

Pedido de patente depositado

#2.1

03/20/1990

RPI 1010

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