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Official data from INPI

AMPLIFICADOR DE BAIXO RUÍDO EM BANDA L

DeferidaInvention Patent

Application data

Number

PI8307771

Type

Invention Patent

Filing

08/23/1983

Publication

04/02/1985

Progress at the INPI

  1. Filing08/23/83
  2. Publication04/02/85
  3. Examination04/07/87
  4. Allowance10/03/89
  5. Grant03/20/90
  6. Terminated02/18/92

The patent was granted on 03/20/1990 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Instituto de Pesquisas Espaciais

SP, BR

See this company's full portfolio

Inventors

E. T. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

10/03/1989

RPI 989

15.10

05/16/1989

RPI 969

Conhecimento de parecer técnico

#7.1

12/22/1987

RPI 896

Solicitação de exame técnico

#4.1

04/07/1987

RPI 859

Publicação do pedido de patente

#3.1

04/02/1985

RPI 754

Pedido de patente depositado

#2.1

11/01/1983

RPI 680

Anuidade - prazo legal encerrado

#18.2

02/18/1992

RPI 1107

Concessão da patente

#16.1

03/20/1990

RPI 1010

Notificação para pagamento de retribuição

#13.1

02/01/1990

RPI 1004

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