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Official data from INPI

APERFEIÇOAMENTO EM FIXAÇÃO E UNIÃO DE TRILHOS DE LINHAS CIRCULARES

ConcedidaInvention Patent

Application data

Number

PI8102250

Type

Invention Patent

Filing

04/13/1981

Publication

11/03/1981

Progress at the INPI

  1. Filing04/13/81
  2. Publication11/03/81
  3. Examination11/16/83
  4. Allowance05/28/85
  5. Grant12/31/85
  6. Terminated06/20/95

The patent was granted on 12/31/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 12/31/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Usinas Siderúrgicas de Minas Gerais S/A - USIMINAS

MG, BR

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Inventors

D. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

09/17/1985

RPI 778

Deferimento

#9.1

05/28/1985

RPI 762

Republicação - classificação IPC

#15.11

12/18/1984

RPI 739

Exigência - art. 36 da LPI

#6.1

10/30/1984

RPI 732

Exigência - art. 36 da LPI

#6.1

07/03/1984

RPI 715

Solicitação de exame técnico

#4.1

11/16/1983

RPI 682

Publicação antecipada

#3.2

11/03/1981

RPI 576

Anuidade - prazo legal encerrado

#18.2

06/20/1995

RPI 1281

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