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Official data from INPI

PROCESSO PARA MOAGEM FINA DE UM MATERIAL DE FONTE E MOINHO COM AGITAÇÃO

PublicadaInvention Patent
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Application data

Number

PI8801384

Type

Invention Patent

Filing

03/25/1988

Publication

11/01/1988
View on INPI

Progress at the INPI

  1. Filing03/25/88
  2. Publication11/01/88
  3. Examination02/19/91
  4. Allowance12/24/91
  5. Grant11/24/92
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 11/01/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Metprotech Limited

GB

Metprotech Pacific (Proprietary) Limited

AU

Inventors

D. E. (pessoa física)

ZA

K. L. (pessoa física)

ZA

Technical data

IPC Classification

B02C 23/18

Priority claims

ZA

87/2229 · 03/26/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/01/1988

RPI 941

Pedido de patente depositado

#2.1

07/26/1988

RPI 927

Carta-patente expirada

#21.1

Patente extinta em 25/03/2003

09/02/2008

RPI 1965

Transferência deferida

#25.1

Transferido de: Metprotech Limited.

09/21/1999

RPI 1498

Concessão da patente

#16.1

11/24/1992

RPI 1147

Notificação para pagamento de retribuição

#13.1

05/19/1992

RPI 1120

Deferimento

#9.1

12/24/1991

RPI 1099

Solicitação de exame técnico

#4.1

02/19/1991

RPI 1055

14.4

10/02/1990

RPI 1035

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