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Official data from INPI

APERFEIÇOAMENTO EM AGULHAS FERROVIARIA.

ConcedidaInvention Patent

Application data

Number

PI7904327

Type

Invention Patent

Filing

07/05/1979

Publication

-

Progress at the INPI

  1. Filing07/05/79
  2. Publication
  3. Examination05/18/82
  4. Allowance12/07/82
  5. Grant08/30/83
  6. Terminated03/27/90

The patent was granted on 08/30/1983 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 08/30/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cobrasma S/A

SP, BR

Inventors

R. W. (pessoa física)

S. I. (pessoa física)

W. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/30/1983

RPI 671

Notificação para pagamento de retribuição

#13.1

05/17/1983

RPI 656

Deferimento

#9.1

12/07/1982

RPI 633

Solicitação de exame técnico

#4.1

05/18/1982

RPI 604

Anuidade - prazo legal encerrado

#18.2

03/27/1990

RPI 1011

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