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Official data from INPI

SISTEMA DE DISCRIMINACAO DE CORRENTE E SUA ESTABILIZACAO

ConcedidaInvention Patent

Application data

Number

PI8301102

Type

Invention Patent

Filing

03/10/1982

Publication

11/22/1983

Progress at the INPI

  1. Filing03/10/82
  2. Publication11/22/83
  3. Examination12/24/85
  4. Allowance08/25/87
  5. Grant03/29/88
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 03/29/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PHILIPS NV [NL]

See this company's full portfolio

Inventors

K. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/29/1988

RPI 910

Notificação para pagamento de retribuição

#13.1

12/15/1987

RPI 895

Deferimento

#9.1

08/25/1987

RPI 879

Republicação - classificação IPC

#15.11

05/05/1987

RPI 863

Exigência - art. 36 da LPI

#6.1

01/13/1987

RPI 847

Solicitação de exame técnico

#4.1

12/24/1985

RPI 792

Publicação do pedido de patente

#3.1

11/22/1983

RPI 683

Pedido de patente depositado

#2.1

04/19/1983

RPI 652

Carta-patente expirada

#21.1

Patente extinta em 07/03/98

08/19/2008

RPI 1963

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