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Official data from INPI

BARREIRAS DE ISOLAMENTO

PublicadaInvention Patent

Application data

Number

PI8805799

Type

Invention Patent

Filing

11/03/1988

Publication

08/01/1989

Progress at the INPI

  1. Filing11/03/88
  2. Publication08/01/89
  3. Examination04/16/91
  4. Allowance03/01/94
  5. Grant07/26/94
  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.

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Latest action published by the INPI: 08/01/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Pirelli General plc

GB

See this company's full portfolio

Inventors

P. S. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8725991 · 11/05/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

08/01/1989

RPI 980

Pedido de patente depositado

#2.1

03/14/1989

RPI 960

Carta-patente expirada

#21.1

Patente extinta em 03/11/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

07/26/1994

RPI 1234

Deferimento

#9.1

03/01/1994

RPI 1213

Solicitação de exame técnico

#4.1

04/16/1991

RPI 1063

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