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Official data from INPI

VÁLVULA REGULADORA E DE ALÍVIO

ConcedidaInvention Patent

Application data

Number

PI8204061

Type

Invention Patent

Filing

07/13/1982

Publication

10/19/1982

Progress at the INPI

  1. Filing07/13/82
  2. Publication10/19/82
  3. Examination02/16/83
  4. Allowance05/22/84
  5. Grant11/27/84
  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: 11/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Industrias de Máquinas Santa Terezinha Ltda

SP, BR

Inventors

F. H. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/27/1984

RPI 736

Notificação para pagamento de retribuição

#13.1

09/04/1984

RPI 724

Deferimento

#9.1

05/22/1984

RPI 709

Exigência - art. 36 da LPI

#6.1

01/03/1984

RPI 689

Solicitação de exame técnico

#4.1

02/16/1983

RPI 643

Publicação antecipada

#3.2

10/19/1982

RPI 626

Pedido de patente depositado

#2.1

08/24/1982

RPI 618

Carta-patente expirada

#21.1

Patente extinta em 13/07/97

07/01/2008

RPI 1956

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