Official data from INPI

SEM TITULO

ConcedidaInvention Patent

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Application data

Number

PI8006497

Type

Invention Patent

Filing

10/09/1980

Publication

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Progress at the INPI

Filing10/09/80
Publication
Examination07/26/83
Allowance10/23/84
Grant04/30/85
Expired11/14/95

The letters patent expired on 11/14/1995: 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: 04/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Institute Of Gas Technology

Inventors

P. J. (pessoa física)

S. W. (pessoa física)

T. P. (pessoa física)

Technical data

IPC Classification

C10J 3/54 C10J 3/56

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/30/1985

RPI 758

Notificação para pagamento de retribuição

#13.1

03/05/1985

RPI 750

Deferimento

#9.1

10/23/1984

RPI 731

Exigência - art. 36 da LPI

#6.1

02/14/1984

RPI 695

Solicitação de exame técnico

#4.1

07/26/1983

RPI 666

Carta-patente expirada

#21.1

11/14/1995

RPI 1302

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