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Official data from INPI

REDE DE QUADRIPOLO PARA A SEPARAÇÃO DE QUATRO TRAJETÓRIAS DE SINAL

ConcedidaInvention Patent

Application data

Number

PI8402898

Type

Invention Patent

Filing

06/14/1984

Publication

05/21/1985

Progress at the INPI

  1. Filing06/14/84
  2. Publication05/21/85
  3. Examination10/15/85
  4. Allowance11/08/88
  5. Grant09/26/89
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Ant Nachrichtentechnik Gmbh.

DE

See this company's full portfolio

Inventors

D. M. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

EP

83 105 973.8 · 06/18/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

02/28/1989

RPI 958

Deferimento

#9.1

11/08/1988

RPI 942

Republicação - classificação IPC

#15.11

08/02/1988

RPI 928

Exigência - art. 36 da LPI

#6.1

05/03/1988

RPI 915

Solicitação de exame técnico

#4.1

10/15/1985

RPI 782

Publicação do pedido de patente

#3.1

05/21/1985

RPI 761

Pedido de patente depositado

#2.1

08/14/1984

RPI 721

Carta-patente expirada

#21.1

Patente extinta em 14/06/99

07/08/2008

RPI 1957

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