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Official data from INPI

FREIO MANUAL INCLUINDO UMA CORRENTE CONECTÁVEL A UMA EXTREMIDADE DE UM FREIO DE VAGÃO FERROVIÁRIO.

ConcedidaInvention Patent

Application data

Number

PI8103903

Type

Invention Patent

Filing

06/22/1919

Publication

03/09/1982

Progress at the INPI

  1. Filing06/22/19
  2. Publication03/09/82
  3. Examination01/10/84
  4. Allowance07/08/86
  5. Grant02/03/87
  6. Expired10/08/96

The letters patent expired on 10/08/1996: 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: 02/03/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

American Standard Inc

US

See this company's full portfolio

Inventors

H. R. (pessoa física)

K. W. (pessoa física)

Technical data

IPC Classification

Priority claims

US

162.298 · 06/23/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/03/1987

RPI 850

Notificação para pagamento de retribuição

#13.1

11/04/1986

RPI 837

Deferimento

#9.1

07/08/1986

RPI 820

Exigência - art. 36 da LPI

#6.1

01/08/1985

RPI 742

Conhecimento de parecer técnico

#7.1

06/19/1984

RPI 713

Solicitação de exame técnico

#4.1

01/10/1984

RPI 690

Publicação do pedido de patente

#3.1

03/09/1982

RPI 594

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

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