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Official data from INPI

PROCESSO DE OBTENÇÃO DE ALUMINA ESPECIAL A PARTIR DE PÓ PRODUZIDO NA CALCINAÇÃO DE ALUMINA METALÚRGICA

Em AnáliseInvention Patent

Application data

Number

PI8705200

Type

Invention Patent

Filing

09/18/1987

Publication

02/14/1989

Progress at the INPI

  1. Filing09/18/87
  2. Publication02/14/89
  3. Examination10/24/89
  4. Allowance06/01/93
  5. Grant03/29/94
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alumina Espanola, S.A.

ES

Inventors

F. C. (pessoa física)

ES

J. C. (pessoa física)

ES

Technical data

IPC Classification

Priority claims

ES

8702105 · 07/17/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/24/1989

RPI 992

Publicação do pedido de patente

#3.1

02/14/1989

RPI 956

Pedido de patente depositado

#2.1

12/22/1987

RPI 896

Carta-patente expirada

#21.1

Patente extinta em 18/09/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

03/29/1994

RPI 1217

Notificação para pagamento de retribuição

#13.1

10/13/1993

RPI 1193

Deferimento

#9.1

06/01/1993

RPI 1174

Exigência - art. 36 da LPI

#6.1

03/10/1992

RPI 1110

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