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Official data from INPI

SISTEMA DE FEIXE ELETRONICO COM CAPACIDADE DE PROJECAO DE CARACTERES

ConcedidaInvention Patent

Application data

Number

PI7804994

Type

Invention Patent

Filing

08/10/1977

Publication

-

Progress at the INPI

  1. Filing08/10/77
  2. Publication
  3. Examination
  4. Allowance05/18/82
  5. Grant11/30/82
  6. Expired12/14/93

The letters patent expired on 12/14/1993: 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: 11/30/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

IBM

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Inventors

P. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/30/1982

RPI 632

Notificação para pagamento de retribuição

#13.1

09/08/1982

RPI 620

Deferimento

#9.1

05/18/1982

RPI 604

15.0

02/24/1982

RPI 592

Exigência - art. 36 da LPI

#6.1

12/01/1981

RPI 580

Carta-patente expirada

#21.1

12/14/1993

RPI 1202

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