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Official data from INPI

APARELHO PARA CONTROLE E TRANSFERENCIA DE DADOS ENTRE UM MEIO DE TRANSMISSAO DE DADOS EM SERIE E UMA PLURALIDADE DE DISPOSITIVOS

ConcedidaInvention Patent

Application data

Number

PI7603072

Type

Invention Patent

Filing

05/14/1975

Publication

-

Progress at the INPI

  1. Filing05/14/75
  2. Publication
  3. Examination
  4. Allowance11/10/81
  5. Grant08/31/82
  6. Expired08/03/93

The letters patent expired on 08/03/1993: 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: 08/31/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

IBM

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Inventors

C. J. (pessoa física)

H. M. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/31/1982

RPI 619

Notificação para pagamento de retribuição

#13.1

03/02/1982

RPI 593

Deferimento

#9.1

11/10/1981

RPI 577

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

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