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Official data from INPI

ATENUADOR DE FIBRA ÓTICA E MÉTODO DE PRODUÇÃO DE FIBRA ÓPTICA PARA O MESMO

PublicadaInvention Patent

Application data

Number

PI8802810

Type

Invention Patent

Filing

06/06/1988

Publication

01/03/1989

Progress at the INPI

  1. Filing06/06/88
  2. Publication01/03/89
  3. Examination10/09/90
  4. Allowance08/16/94
  5. Grant01/31/95
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 01/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Pirelli General plc

GB

See this company's full portfolio

Inventors

E. T. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8713081 · 06/04/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

01/03/1989

RPI 950

Pedido de patente depositado

#2.1

11/01/1988

RPI 941

Carta-patente expirada

#21.1

Patente extinta em 06/06/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

01/31/1995

RPI 1261

Deferimento

#9.1

08/16/1994

RPI 1237

Exigência - art. 36 da LPI

#6.1

11/23/1993

RPI 1199

Solicitação de exame técnico

#4.1

10/09/1990

RPI 1036

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