Official data from INPI

VÁLVULA E VÁLVULA DE ESCAPE E CONJUNTO DE VÁLVULA INCORPORANDO A MESMA.

Em AnáliseInvention Patent

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Application data

Number

PI7700944

Type

Invention Patent

Filing

02/16/1977

Publication

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Progress at the INPI

Filing02/16/77
Publication
Examination
Allowance02/09/82
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: 10/08/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. C. (pessoa física)

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

10/08/1985

RPI 781

Notificação para pagamento de retribuição

#13.1

06/08/1982

RPI 607

Deferimento

#9.1

02/09/1982

RPI 590

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

From the same holder

PLATAFORMA MARÍTIMA SEMI-SUBMERSÍVEL

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