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Official data from INPI

ENGATE DE VAGÃO FERROVIÁRIO E ENGATE ROTATIVO DE VAGÃO FERROVIÁRIO.

Em AnáliseInvention Patent

Application data

Number

PI8005601

Type

Invention Patent

Filing

09/03/1980

Publication

-

Progress at the INPI

  1. Filing09/03/80
  2. Publication
  3. Examination10/27/81
  4. Allowance10/09/84
  5. Grant04/30/85
  6. Terminated08/02/94

The patent was granted on 04/30/1985 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: 12/02/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Dresser Industries Inc

US

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Inventors

D. W. (pessoa física)

Technical data

IPC Classification

Priority claims

US

072.707 · 09/04/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

12/02/1986

RPI 841

Concessão da patente

#16.1

04/30/1985

RPI 758

Deferimento

#9.1

10/09/1984

RPI 729

Exigência - art. 36 da LPI

#6.1

04/17/1984

RPI 704

Exigência - art. 36 da LPI

#6.1

11/08/1983

RPI 681

Pedido de certificado de adição de invenção

#5.1

04/13/1982

RPI 599

Solicitação de exame técnico

#4.1

10/27/1981

RPI 575

Anuidade - prazo legal encerrado

#18.2

08/02/1994

RPI 1235

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