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Official data from INPI

APARELHO E PROCESSO PARA IMPRIMIR UMA FORCA PROPULSORA A UM ESCUDO PARA EMPREGO NA ESCAVACAO DE TUNEIS

ConcedidaInvention Patent

Application data

Number

PI8401742

Type

Invention Patent

Filing

04/14/1983

Publication

11/20/1984

Progress at the INPI

  1. Filing04/14/83
  2. Publication11/20/84
  3. Examination04/09/85
  4. Allowance09/27/88
  5. Grant07/25/89
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ISEKI KAIHATSU KOKI [JP]

Inventors

A. T. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/25/1989

RPI 979

Notificação para pagamento de retribuição

#13.1

01/10/1989

RPI 951

Deferimento

#9.1

09/27/1988

RPI 936

6.2

09/22/1987

RPI 883

Pedido de certificado de adição de invenção

#5.1

09/10/1985

RPI 777

Solicitação de exame técnico

#4.1

04/09/1985

RPI 755

Publicação do pedido de patente

#3.1

11/20/1984

RPI 735

Pedido de patente depositado

#2.1

06/26/1984

RPI 714

Carta-patente expirada

#21.1

Patente extinta em 13/04/99

08/19/2008

RPI 1963

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