Official data from INPI

DISPOSITIVO DE ASSISTÊNCIA HIDRÁULICA

ConcedidaInvention Patent

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Application data

Number

PI8500341

Type

Invention Patent

Filing

01/25/1985

Publication

09/10/1985

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Progress at the INPI

Filing01/25/85
Publication09/10/85
Examination09/01/87
Allowance08/23/88
Grant09/26/89
Expired07/15/08

The letters patent expired on 07/15/2008: 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Société Anonyme D.B.A., empresa francesa

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Inventors

C. R. (pessoa física)

J. S. (pessoa física)

R. L. (pessoa física)

Technical data

IPC Classification

B60T 11/20

Priority claims

84-01439 · 01/31/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

12/13/1988

RPI 947

Deferimento

#9.1

08/23/1988

RPI 931

Solicitação de exame técnico

#4.1

09/01/1987

RPI 880

Publicação do pedido de patente

#3.1

09/10/1985

RPI 777

Pedido de patente depositado

#2.1

04/23/1985

RPI 757

Carta-patente expirada

#21.1

Patente extinta em 25/01/2000

07/15/2008

RPI 1958

20.4

08/07/1990

RPI 1027

20.7