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Official data from INPI

CONJUNTO PORTADOR DE ACOPLADOR FERROVIÁRIO.

ConcedidaInvention Patent

Application data

Number

PI8004060

Type

Invention Patent

Filing

06/27/1980

Publication

-

Progress at the INPI

  1. Filing06/27/80
  2. Publication
  3. Examination05/19/81
  4. Allowance02/14/84
  5. Grant07/30/85
  6. Expired09/12/95

The letters patent expired on 09/12/1995: 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: 07/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Amsted Industries Incorporated

US

See this company's full portfolio

Inventors

A. R. (pessoa física)

Technical data

IPC Classification

Priority claims

US

053.345 · 06/29/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/30/1985

RPI 771

Notificação para pagamento de retribuição

#13.1

06/18/1985

RPI 765

110

03/26/1985

RPI 753

Recurso

#12.1

05/22/1984

RPI 709

Deferimento

#9.1

02/14/1984

RPI 695

Exigência - art. 36 da LPI

#6.1

09/06/1983

RPI 672

Solicitação de exame técnico

#4.1

05/19/1981

RPI 552

Carta-patente expirada

#21.1

09/12/1995

RPI 1293

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