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Official data from INPI

APARELHO E APERFEICOAMENTO EM PROCESSO PARA EMPREGO EM UM SISTEMA PARA A LEITURA OTICA DE INFORMACAO REGISTRADAS SOBRE UMA SUPERFICIE DE UM DISCO

ConcedidaInvention Patent

Application data

Number

PI7900181

Type

Invention Patent

Filing

01/11/1979

Publication

-

Progress at the INPI

  1. Filing01/11/79
  2. Publication
  3. Examination10/13/82
  4. Allowance01/02/85
  5. Grant10/01/85
  6. Expired05/31/94

The letters patent expired on 05/31/1994: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 10/01/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. V. (pessoa física)

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Inventors

D. W. (pessoa física)

E. J. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/01/1985

RPI 780

Notificação para pagamento de retribuição

#13.1

04/23/1985

RPI 757

14.1

04/09/1985

RPI 755

14.4

04/02/1985

RPI 754

14.4

03/05/1985

RPI 750

Deferimento

#9.1

01/02/1985

RPI 741

Exigência - art. 36 da LPI

#6.1

11/08/1983

RPI 681

Solicitação de exame técnico

#4.1

10/13/1982

RPI 625

Carta-patente expirada

#21.1

05/31/1994

RPI 1226

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