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Official data from INPI

REGULADOR DE PRESSÃO

PublicadaInvention Patent

Application data

Number

PI8901053

Type

Invention Patent

Filing

03/07/1989

Publication

10/24/1989

Progress at the INPI

  1. Filing03/07/89
  2. Publication10/24/89
  3. Examination07/30/91
  4. Allowance09/13/94
  5. Grant04/25/95
  6. Expired12/15/09

The letters patent expired on 12/15/2009: 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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

British Technology Group Limited

GB

See this company's full portfolio

Inventors

W. W. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

UK

8805523 · 03/08/1988

UK

8902142 · 02/01/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/24/1989

RPI 992

Pedido de patente depositado

#2.1

04/25/1989

RPI 966

Carta-patente expirada

#21.1

Patente extinta em 07/03/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

04/25/1995

RPI 1273

Notificação para pagamento de retribuição

#13.1

01/17/1995

RPI 1259

Deferimento

#9.1

09/13/1994

RPI 1241

Exigência - art. 36 da LPI

#6.1

05/24/1994

RPI 1225

Exigência - art. 36 da LPI

#6.1

10/19/1993

RPI 1194

14.1

03/30/1993

RPI 1165

Solicitação de exame técnico

#4.1

07/30/1991

RPI 1078

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