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Official data from INPI

TIMONERIA DE FREIO E PROCESSO DE FRENAGEM PARA TRUQUE DE VAGAO FERROVIARIO

ConcedidaInvention Patent

Application data

Number

PI7900071

Type

Invention Patent

Filing

01/05/1979

Publication

-

Progress at the INPI

  1. Filing01/05/79
  2. Publication
  3. Examination
  4. Allowance02/08/83
  5. Grant09/27/83
  6. Expired05/31/94

The letters patent expired on 05/31/1994: 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: 09/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

AMSTED IND INC

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Inventors

M. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/27/1983

RPI 675

Notificação para pagamento de retribuição

#13.1

06/07/1983

RPI 659

Deferimento

#9.1

02/08/1983

RPI 642

Exigência - art. 36 da LPI

#6.1

06/15/1982

RPI 608

Carta-patente expirada

#21.1

05/31/1994

RPI 1226

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