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Official data from INPI

DISPOSITIVO AUTOMÁTICO DE INJEÇÀO DE TONS PARA MEDIÇÀO DE NÍVEIS E CONTROLE DE CANAIS DE RÁDIO TERMINADOS POR CENTRAIS PRIVATIVAS OU MESAS PBX

ConcedidaInvention Patent
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Application data

Number

PI8302814

Type

Invention Patent

Filing

05/27/1983

Publication

01/15/1985
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Progress at the INPI

  1. Filing05/27/83
  2. Publication01/15/85
  3. Examination03/04/87
  4. Allowance02/28/89
  5. Grant10/24/89
  6. Terminated08/29/95

The patent was granted on 10/24/1989 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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Usinas Siderúrgicas de Minas Gerais S/A - USIMINAS

MG, BR

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Inventors

E. A. (pessoa física)

BR

Technical data

IPC Classification

H04M 3/26

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/24/1989

RPI 992

Notificação para pagamento de retribuição

#13.1

07/11/1989

RPI 977

Deferimento

#9.1

02/28/1989

RPI 958

Exigência - art. 36 da LPI

#6.1

08/30/1988

RPI 932

Republicação - classificação IPC

#15.11

08/02/1988

RPI 928

Exigência - art. 36 da LPI

#6.1

03/29/1988

RPI 910

Solicitação de exame técnico

#4.1

03/04/1987

RPI 854

Publicação do pedido de patente

#3.1

01/15/1985

RPI 743

Pedido de patente depositado

#2.1

07/12/1983

RPI 664

Anuidade - prazo legal encerrado

#18.2

08/29/1995

RPI 1291

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