Official data from INPI

PROCESSO PARA A FABRICACAO DE UM GAS REDUTOR

Concessão AnuladaInvention Patent

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Application data

Number

PI7900656

Type

Invention Patent

Filing

02/03/1978

Publication

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Progress at the INPI

Filing02/03/78
Publication
Examination
Allowance07/12/83
Grant12/27/83
Expired06/21/94

The letters patent expired on 06/21/1994: 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: 03/20/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

T. A. (pessoa física)

Inventors

R. J. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

16.3

03/20/1984

RPI 700

Concessão da patente

#16.1

12/27/1983

RPI 688

Notificação para pagamento de retribuição

#13.1

11/08/1983

RPI 681

Deferimento

#9.1

07/12/1983

RPI 664

Exigência - art. 36 da LPI

#6.1

07/20/1982

RPI 613

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

From the same holder

PROCESSO E APARELHO A SINTESE DE AMONIA CATALISADOR PARA REACOES DE METANACAO E PROCESSO PARA SUA UTILIZACAO

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