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Official data from INPI

APERFEIÇOAMENTO EM VEDAÇÕES MECÂNICAS.

ConcedidaInvention Patent

Application data

Number

PI8307500

Type

Invention Patent

Filing

03/28/1983

Publication

08/14/1984

Progress at the INPI

  1. Filing03/28/83
  2. Publication08/14/84
  3. Examination10/23/84
  4. Allowance06/09/87
  5. Grant12/29/87
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 12/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Flexibox Limited

Inventors

N. W. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

8209790 · 04/02/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/29/1987

RPI 897

Notificação para pagamento de retribuição

#13.1

09/29/1987

RPI 884

Deferimento

#9.1

06/09/1987

RPI 868

Exigência - art. 36 da LPI

#6.1

05/27/1986

RPI 814

Exigência - art. 36 da LPI

#6.1

05/28/1985

RPI 762

Solicitação de exame técnico

#4.1

10/23/1984

RPI 731

Notificação de entrada na fase nacional - PCT

#1.3

08/14/1984

RPI 721

Carta-patente expirada

#21.1

Patente extinta em 28/03/98

07/01/2008

RPI 1956

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