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Official data from INPI

APERFEICOAMENTOS INTRODUZIDOS EM RETROESCAVADEIRA

ConcedidaInvention Patent

Application data

Number

PI8403446

Type

Invention Patent

Filing

07/06/1984

Publication

03/11/1986

Progress at the INPI

  1. Filing07/06/84
  2. Publication03/11/86
  3. Examination07/15/86
  4. Allowance09/27/88
  5. Grant04/25/89
  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: 04/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SCAVA IND E COMERCIO LTDA [BR]

Inventors

T. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/25/1989

RPI 966

Deferimento

#9.1

09/27/1988

RPI 936

14.7

03/29/1988

RPI 910

14.7

11/24/1987

RPI 892

Solicitação de exame técnico

#4.1

07/15/1986

RPI 821

Publicação do pedido de patente

#3.1

03/11/1986

RPI 803

14.1

10/08/1985

RPI 781

Pedido de patente depositado

#2.1

09/18/1984

RPI 726

Carta-patente expirada

#21.1

Patente extinta em 06/07/99

08/19/2008

RPI 1963

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