Official data from INPI

VÁLVULA

ConcedidaInvention Patent

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Application data

Number

PI8405559

Type

Invention Patent

Filing

10/31/1984

Publication

06/03/1986

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Progress at the INPI

Filing10/31/84
Publication06/03/86
Examination08/12/86
Allowance12/29/87
Grant07/26/88
Expired07/08/08

The letters patent expired on 07/08/2008: 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: 07/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

J. B. (pessoa física)

RJ, BR

Inventors

F. C. (pessoa física)

J. B. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/26/1988

RPI 927

Notificação para pagamento de retribuição

#13.1

05/10/1988

RPI 916

Republicação - classificação IPC

#15.11

05/10/1988

RPI 916

Deferimento

#9.1

12/29/1987

RPI 897

Solicitação de exame técnico

#4.1

08/12/1986

RPI 825

Publicação do pedido de patente

#3.1

06/03/1986

RPI 815

Pedido de patente depositado

#2.1

01/15/1985

RPI 743

Carta-patente expirada

#21.1

Patente extinta em 31/10/99

07/08/2008

RPI 1957

Republicação - classificação IPC

#15.11

10/15/1991

RPI 1089

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