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Official data from INPI

Válvula de regulação da pressão em equipamentos pneumáticos.

ConcedidaInvention Patent

Application data

Number

PI8100052

Type

Invention Patent

Filing

01/07/1981

Publication

-

Progress at the INPI

  1. Filing01/07/81
  2. Publication
  3. Examination07/05/83
  4. Allowance10/09/84
  5. Grant04/30/85
  6. Expired03/19/96

The letters patent expired on 03/19/1996: 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: 04/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Wabco Fahrzeugbremsen Gmbh.

DE

Inventors

D. K. (pessoa física)

K. H. (pessoa física)

M. W. (pessoa física)

Technical data

IPC Classification

Priority claims

DE

3003032.1 · 01/29/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/30/1985

RPI 758

Deferimento

#9.1

10/09/1984

RPI 729

Exigência - art. 36 da LPI

#6.1

06/19/1984

RPI 713

Exigência - art. 36 da LPI

#6.1

01/03/1984

RPI 689

Solicitação de exame técnico

#4.1

07/05/1983

RPI 663

Carta-patente expirada

#21.1

03/19/1996

RPI 1320

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