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Official data from INPI

CONJUNTO DE TAMBOR

Em AnáliseInvention Patent

Application data

Number

PI8700324

Type

Invention Patent

Filing

01/26/1987

Publication

12/08/1987

Progress at the INPI

  1. Filing01/26/87
  2. Publication12/08/87
  3. Examination11/21/89
  4. Allowance10/23/90
  5. Grant08/27/91
  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: 11/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

F. L. Smidth Comércio e Industria Ltda

SP, BR

F.L. Smidth, S.A., Comércio e Indústria.

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Inventors

H. A. (pessoa física)

DK

Technical data

IPC Classification

Priority claims

GB

8601928 · 01/27/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/21/1989

RPI 996

Publicação do pedido de patente

#3.1

12/08/1987

RPI 894

Pedido de patente depositado

#2.1

05/26/1987

RPI 866

Carta-patente expirada

#21.1

Patente extinta em 26/01/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

08/27/1991

RPI 1082

14.4

04/16/1991

RPI 1063

Notificação para pagamento de retribuição

#13.1

02/05/1991

RPI 1053

Deferimento

#9.1

10/23/1990

RPI 1038

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