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Official data from INPI

VÁLVULA DE CONTROLE DE PRESSÃO DE CIRCUITO DUPLO PARA SISTEMAS DE FREIO HIDRÁULICO PARA VEÍCULOS AUTOMOTORES.

ConcedidaInvention Patent

Application data

Number

PI8101958

Type

Invention Patent

Filing

04/01/1981

Publication

10/06/1981

Progress at the INPI

  1. Filing04/01/81
  2. Publication10/06/81
  3. Examination10/25/83
  4. Allowance08/14/84
  5. Grant12/30/86
  6. Expired09/24/96

The letters patent expired on 09/24/1996: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/30/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alfred Teves GmbH

DE

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Inventors

H. H. (pessoa física)

R. M. (pessoa física)

S. B. (pessoa física)

T. P. (pessoa física)

Technical data

IPC Classification

Priority claims

DE

P 30 12 765.2 · 04/02/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/30/1986

RPI 845

Notificação para pagamento de retribuição

#13.1

03/11/1986

RPI 803

110

11/05/1985

RPI 785

Recurso

#12.1

11/27/1984

RPI 736

Deferimento

#9.1

08/14/1984

RPI 721

8.1

07/03/1984

RPI 715

Solicitação de exame técnico

#4.1

10/25/1983

RPI 679

Publicação do pedido de patente

#3.1

10/06/1981

RPI 572

Carta-patente expirada

#21.1

09/24/1996

RPI 1347

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