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Official data from INPI

DISPOSITIVO DE CONTROLE AUTOMÁTICO DE LUMINOSIDADE PARA MICROFILMADORAS

ConcedidaInvention Patent

Application data

Number

PI8008036

Type

Invention Patent

Filing

12/09/1980

Publication

11/03/1981

Progress at the INPI

  1. Filing12/09/80
  2. Publication11/03/81
  3. Examination03/29/83
  4. Allowance02/21/84
  5. Grant08/28/84
  6. Terminated02/04/92

The patent was granted on 08/28/1984 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: 08/28/1984. 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

A. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/28/1984

RPI 723

Notificação para pagamento de retribuição

#13.1

06/12/1984

RPI 712

Deferimento

#9.1

02/21/1984

RPI 696

Exigência - art. 36 da LPI

#6.1

10/04/1983

RPI 676

Solicitação de exame técnico

#4.1

03/29/1983

RPI 649

Publicação antecipada

#3.2

11/03/1981

RPI 576

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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