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Official data from INPI

PROCESSO DE FABRICAÇÃO DE ÊMBOLO E ÊMBOLO PARA MOTORES DE COMBUSTÃO INTERNA

Em AnáliseInvention Patent

Application data

Number

PI8500556

Type

Invention Patent

Filing

02/07/1985

Publication

09/09/1986

Progress at the INPI

  1. Filing02/07/85
  2. Publication09/09/86
  3. Examination05/31/88
  4. Allowance01/22/91
  5. Grant09/24/91
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 05/31/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Metal Leve S/A Indústria e Comércio

SP, BR

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Inventors

A. A. (pessoa física)

BR

D. M. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

05/31/1988

RPI 919

Publicação do pedido de patente

#3.1

09/09/1986

RPI 829

Pedido de patente depositado

#2.1

04/30/1985

RPI 758

Carta-patente expirada

#21.1

Patente extinta em 07/02/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

09/24/1991

RPI 1086

Notificação para pagamento de retribuição

#13.1

05/14/1991

RPI 1067

Deferimento

#9.1

01/22/1991

RPI 1051

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