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Official data from INPI

SEPARADOR PARA CLASSIFICAR MATERIAL EM PARTÍCULAS

Em AnáliseInvention Patent

Application data

Number

PI8603450

Type

Invention Patent

Filing

07/22/1986

Publication

03/04/1987

Progress at the INPI

  1. Filing07/22/86
  2. Publication03/04/87
  3. Examination06/09/87
  4. Allowance05/16/89
  5. Grant01/09/90
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 09/12/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

F. L. Smidth Comércio e Industria Ltda

SP, BR

See this company's full portfolio

Inventors

J. F. (pessoa física)

DK

Technical data

IPC Classification

Priority claims

GB

8518536 · 07/23/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

09/12/1989

RPI 986

Deferimento

#9.1

05/16/1989

RPI 969

Solicitação de exame técnico

#4.1

06/09/1987

RPI 868

Publicação do pedido de patente

#3.1

03/04/1987

RPI 854

Pedido de patente depositado

#2.1

01/13/1987

RPI 847

Carta-patente expirada

#21.1

Patente extinta em 22/07/2001

07/22/2008

RPI 1959

20.4

06/11/1991

RPI 1071

Concessão da patente

#16.1

01/09/1990

RPI 1001

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