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Official data from INPI

SISTEMAS DE LEITURA DE CARCTERES.

ConcedidaInvention Patent

Application data

Number

PI7906741

Type

Invention Patent

Filing

10/18/1979

Publication

-

Progress at the INPI

  1. Filing10/18/79
  2. Publication
  3. Examination
  4. Allowance08/16/83
  5. Grant12/27/83
  6. Expired04/25/95

The letters patent expired on 04/25/1995: 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: 12/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. B. (pessoa física)

Inventors

M. D. (pessoa física)

Technical data

IPC Classification

Priority claims

FR

78 29 848 · 10/19/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/27/1983

RPI 688

Deferimento

#9.1

08/16/1983

RPI 669

Exigência - art. 36 da LPI

#6.1

08/10/1982

RPI 616

Carta-patente expirada

#21.1

04/25/1995

RPI 1273

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