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Official data from INPI

SISTEMA DE CORRECAO DE ERRO PARA DADOS EM SERIE POR BYTE SISTEMA DE CORRECAO DE ERRO PARA DADOS EM SERIE POR BYTE

ConcedidaInvention Patent

Application data

Number

PI7903623

Type

Invention Patent

Filing

06/30/1978

Publication

-

Progress at the INPI

  1. Filing06/30/78
  2. Publication
  3. Examination02/24/82
  4. Allowance11/16/83
  5. Grant04/24/84
  6. Expired04/04/95

The letters patent expired on 04/04/1995: 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: 04/24/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

IBM

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Inventors

H. P. (pessoa física)

S. W. (pessoa física)

S. P. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/24/1984

RPI 705

Deferimento

#9.1

11/16/1983

RPI 682

Exigência - art. 36 da LPI

#6.1

05/31/1983

RPI 658

Exigência - art. 36 da LPI

#6.1

09/08/1982

RPI 620

Solicitação de exame técnico

#4.1

02/24/1982

RPI 592

Carta-patente expirada

#21.1

04/04/1995

RPI 1270

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