Official data from INPI

TUBULACAO DE ESCAPAMENTO E ADMISSAO PARA UM MOTOR DE COMBUSTAO INTERNA

Em AnáliseInvention Patent

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Application data

Number

PI7702261

Type

Invention Patent

Filing

04/08/1976

Publication

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Progress at the INPI

Filing04/08/76
Publication
Examination
Allowance06/01/82
Grant
Expired07/27/93

The letters patent expired on 07/27/1993: 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: 02/22/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PERKINS ENGINES LTD

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

22.9

02/22/1983

RPI 644

Notificação para pagamento de retribuição

#13.1

09/21/1982

RPI 622

Deferimento

#9.1

06/01/1982

RPI 606

Exigência - art. 36 da LPI

#6.1

10/13/1981

RPI 573

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

From the same holder

PROCESSO PARA FABRICACAO DE UM PISTAO PARA MOTOR DE COMBUSTAO INTERNA,O PISTAO OBTIDO E UM IMPLANTE PROVIDO NO PISTAO PISTAO PARA MOTOR DE COMBUSTAO INTERNA E SEU PROCESSO DE FABRICACAO

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