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Official data from INPI

SEM TITULO

ConcedidaInvention Patent
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Application data

Number

PI8102532

Type

Invention Patent

Filing

04/27/1981

Publication

01/05/1982
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Progress at the INPI

  1. Filing04/27/81
  2. Publication01/05/82
  3. Examination04/03/84
  4. Allowance10/29/85
  5. Grant06/24/86
  6. Expired10/01/96

The letters patent expired on 10/01/1996: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 06/24/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

I. C. (pessoa física)

US

Inventors

M. T. (pessoa física)

Technical data

IPC Classification

H03F 3/16

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/24/1986

RPI 818

Notificação para pagamento de retribuição

#13.1

04/15/1986

RPI 808

Deferimento

#9.1

10/29/1985

RPI 784

Exigência - art. 36 da LPI

#6.1

04/09/1985

RPI 755

Republicação - classificação IPC

#15.11

12/18/1984

RPI 739

Exigência - art. 36 da LPI

#6.1

10/16/1984

RPI 730

Solicitação de exame técnico

#4.1

04/03/1984

RPI 702

Publicação do pedido de patente

#3.1

01/05/1982

RPI 585

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

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