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Official data from INPI

VÁLVULA HIDRÁULICA

Em AnáliseInvention Patent

Application data

Number

PI8203015

Type

Invention Patent

Filing

05/24/1982

Publication

01/03/1984

Progress at the INPI

  1. Filing05/24/82
  2. Publication01/03/84
  3. Examination06/19/84
  4. Allowance04/16/85
  5. Grant10/01/85
  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: 04/22/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Tecnal Tecnologia e Desenvolvimento Industrial S/C Ltda

RJ, BR

Inventors

S. T. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

201

04/22/1987

RPI 861

Pedido de licença voluntária

#17.1

12/02/1986

RPI 841

Concessão da patente

#16.1

10/01/1985

RPI 780

Deferimento

#9.1

04/16/1985

RPI 756

14.1

10/02/1984

RPI 728

14.4

09/25/1984

RPI 727

Solicitação de exame técnico

#4.1

06/19/1984

RPI 713

Publicação do pedido de patente

#3.1

01/03/1984

RPI 689

Pedido de patente depositado

#2.1

07/13/1982

RPI 612

Carta-patente expirada

#21.1

Patente extinta em 24/05/97

07/01/2008

RPI 1956

20.4

05/31/1994

RPI 1226

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