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Official data from INPI

COMUTADOR DIGITAL DE VELOCIDADES MULTIPLAS DE TRANSMISSAO DE DADOS PARA UM CONTROLADOR DE COMUNICACOES DE ACESSO MULTIPLO POR CAMPOS DE TEMPO

ConcedidaInvention Patent

Application data

Number

PI8101346

Type

Invention Patent

Filing

03/07/1980

Publication

10/27/1981

Progress at the INPI

  1. Filing03/07/80
  2. Publication10/27/81
  3. Examination09/20/83
  4. Allowance12/11/84
  5. Grant05/28/85
  6. Terminated02/04/92

The patent was granted on 05/28/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 05/28/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

IBM

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Inventors

A. I. (pessoa física)

B. J. (pessoa física)

K. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/28/1985

RPI 762

Deferimento

#9.1

12/11/1984

RPI 738

Solicitação de exame técnico

#4.1

09/20/1983

RPI 674

Publicação do pedido de patente

#3.1

10/27/1981

RPI 575

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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