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Official data from INPI

VALVULA DE RETENCAO PARA FREIOS DE DESCARGA

Em AnáliseInvention Patent

Application data

Number

PI7802957

Type

Invention Patent

Filing

05/12/1977

Publication

-

Progress at the INPI

  1. Filing05/12/77
  2. Publication
  3. Examination
  4. Allowance09/28/82
  5. Grant04/26/83
  6. Terminated10/03/89

The patent was granted on 04/26/1983 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

KNORR BREMSE GMBH

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Inventors

L. E. (pessoa física)

P. P. (pessoa física)

S. T. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

10/03/1989

RPI 989

Pedido de licença compulsória

#20.1

12/30/1986

RPI 845

Concessão da patente

#16.1

04/26/1983

RPI 653

Notificação para pagamento de retribuição

#13.1

02/01/1983

RPI 641

Deferimento

#9.1

09/28/1982

RPI 623

Exigência - art. 36 da LPI

#6.1

03/02/1982

RPI 593

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