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Official data from INPI

MEIO AUXILIAR DE APRENDIZAGEM,APARELHOS ELETRONICOS,CIRCUITOS E DISPOSITIVO DE CIRCUITO INTEGRADO DE SINTESE DE FALA,INTERPOLADOR DE PARAMETRO,CONVERSOR DE DADOS PARAMETRICO E PROCESSO PARA DECODIFICAR DADOS DE COMPRIMENTO DE QUADRO VARIAVEIS

ConcedidaInvention Patent

Application data

Number

PI7902621

Type

Invention Patent

Filing

04/28/1978

Publication

-

Progress at the INPI

  1. Filing04/28/78
  2. Publication
  3. Examination01/26/82
  4. Allowance08/10/82
  5. Grant02/22/83
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 02/22/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TEXAS INSTRUMENTS INC

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Inventors

B. G. (pessoa física)

B. P. (pessoa física)

M. J. (pessoa física)

W. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/22/1983

RPI 644

Deferimento

#9.1

08/10/1982

RPI 616

Solicitação de exame técnico

#4.1

01/26/1982

RPI 588

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

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