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Official data from INPI

APARELHO PARA CONTROLE DE RUÍDO DE CABINE PARA UMA AERONAVE.

Arquivada/ExtintaInvention PatentPCT · GB1987000442

Application data

Number

PI8707730

Type

Invention Patent

Filing

06/23/1987

Publication

08/15/1989

PCT

GB1987000442

Progress at the INPI

  1. Filing06/23/87
  2. Publication08/15/89
  3. Examination01/23/90
  4. Allowance06/08/93
  5. Grant10/26/93
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 08/15/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Secretary Of State For Trade And Industry In Her Britannic Majesty's Government Of t

GB

Inventors

P. N. (pessoa física)

GB

S. E. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8615315 · 06/23/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação de entrada na fase nacional - PCT

#1.3

08/15/1989

RPI 982

Carta-patente expirada

#21.1

Patente extinta em 23/06/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

10/26/1993

RPI 1195

Deferimento

#9.1

06/08/1993

RPI 1175

Solicitação de exame técnico

#4.1

01/23/1990

RPI 1003

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