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Official data from INPI

VÁLVULA DE SEDE FLEXÍVEL

ConcedidaInvention Patent

Application data

Number

PI8204381

Type

Invention Patent

Filing

07/27/1982

Publication

03/07/1984

Progress at the INPI

  1. Filing07/27/82
  2. Publication03/07/84
  3. Examination07/01/86
  4. Allowance12/29/87
  5. Grant07/26/88
  6. Terminated10/16/90

The patent was granted on 07/26/1988 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 07/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Waterfield Engineering Limited

GB

Inventors

T. W. (pessoa física)

GB

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/26/1988

RPI 927

Notificação para pagamento de retribuição

#13.1

05/10/1988

RPI 916

Deferimento

#9.1

12/29/1987

RPI 897

Exigência - art. 36 da LPI

#6.1

03/04/1987

RPI 854

Solicitação de exame técnico

#4.1

07/01/1986

RPI 819

Publicação do pedido de patente

#3.1

03/07/1984

RPI 698

Pedido de patente depositado

#2.1

09/08/1982

RPI 620

Anuidade - prazo legal encerrado

#18.2

10/16/1990

RPI 1037

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