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Official data from INPI

VÁLVULA DE BLOQUEIO

ConcedidaInvention Patent

Application data

Number

PI8500359

Type

Invention Patent

Filing

01/25/1985

Publication

09/10/1985

Progress at the INPI

  1. Filing01/25/85
  2. Publication09/10/85
  3. Examination06/17/86
  4. Allowance02/09/88
  5. Grant08/30/88
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 08/30/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Klinger AG

CH

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Inventors

W. P. (pessoa física)

Technical data

IPC Classification

Priority claims

AT

A259/84 · 01/26/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/30/1988

RPI 932

Deferimento

#9.1

02/09/1988

RPI 903

Solicitação de exame técnico

#4.1

06/17/1986

RPI 817

Publicação do pedido de patente

#3.1

09/10/1985

RPI 777

Pedido de patente depositado

#2.1

04/23/1985

RPI 757

Carta-patente expirada

#21.1

Patente extinta em 25/01/2000

07/15/2008

RPI 1958

22.2

04/22/1997

RPI 1377

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