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Official data from INPI

VÁLVULA DE MEDIÇÃO DE CÂMARA DESARMÁVEL.

Em AnáliseInvention Patent

Application data

Number

PI8804594

Type

Invention Patent

Filing

09/06/1988

Publication

04/18/1989

Progress at the INPI

  1. Filing09/06/88
  2. Publication04/18/89
  3. Examination11/07/89
  4. Allowance05/18/93
  5. Grant09/28/93
  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: 11/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Bespak Plc

GB

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Inventors

D. H. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

8720978 · 09/07/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/07/1989

RPI 994

Publicação do pedido de patente

#3.1

04/18/1989

RPI 965

Pedido de patente depositado

#2.1

01/24/1989

RPI 953

Carta-patente expirada

#21.1

Patente extinta em 06/09/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

09/28/1993

RPI 1191

Deferimento

#9.1

05/18/1993

RPI 1172

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