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Official data from INPI

PISTÃO PARA UM MOTOR DE COMBUSTÃO INTERNA

Arquivada/ExtintaInvention Patent
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Application data

Number

PI8905222

Type

Invention Patent

Filing

10/13/1989

Publication

05/15/1990
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Progress at the INPI

  1. Filing10/13/89
  2. Publication05/15/90
  3. Examination06/09/92
  4. Allowance11/23/93
  5. Grant05/31/94
  6. Expired12/29/09

The letters patent expired on 12/29/2009: 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: 12/29/2009. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Wellworthy Limited

GB

Inventors

D. F. (pessoa física)

GB

Technical data

IPC Classification

F02F 3/00

Priority claims

GB

8824222.7 · 10/15/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 13/10/2004

12/29/2009

RPI 2034

Concessão da patente

#16.1

05/31/1994

RPI 1226

Deferimento

#9.1

11/23/1993

RPI 1199

Solicitação de exame técnico

#4.1

06/09/1992

RPI 1123

Publicação do pedido de patente

#3.1

05/15/1990

RPI 1018

Pedido de patente depositado

#2.1

03/01/1990

RPI 1007

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