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Official data from INPI

APERFEIÇOAMENTOS EM SISTEMA DE COMUNICAÇÃO TELEFÔNICA KS.

Em AnáliseInvention Patent
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Application data

Number

PI8000731

Type

Invention Patent

Filing

02/06/1980

Publication

-
View on INPI

Progress at the INPI

  1. Filing02/06/80
  2. Publication
  3. Examination
  4. Allowance03/27/84
  5. Grant10/30/84
  6. Terminated11/03/93

The patent was granted on 10/30/1984 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: 11/11/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

GTE do Brasil S/A Indústria e Comércio

SP, BR

Multitel Sistemas S/A., empresa brasileira

SP, BR

Inventors

L. D. (pessoa física)

BR

Technical data

IPC Classification

H04M 3/42H04Q 3/10

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

11/11/1986

RPI 838

Concessão da patente

#16.1

10/30/1984

RPI 732

Notificação para pagamento de retribuição

#13.1

07/17/1984

RPI 717

14.1

05/02/1984

RPI 706

Deferimento

#9.1

03/27/1984

RPI 701

Exigência - art. 36 da LPI

#6.1

09/13/1983

RPI 673

Republicação - classificação IPC

#15.11

04/26/1983

RPI 653

Exigência - art. 36 da LPI

#6.1

04/12/1983

RPI 651

Anuidade - prazo legal encerrado

#18.2

11/03/1993

RPI 1196

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