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Official data from INPI

VALVULA DE SOBREPRESSAO PARA SACO DE EMBALAGEM FECHADO A PROVA DE GAS E PROCESSO PARA A MONTAGEM DE VALVULA

ConcedidaInvention Patent

Application data

Number

PI8108535

Type

Invention Patent

Filing

01/07/1981

Publication

10/19/1982

Progress at the INPI

  1. Filing01/07/81
  2. Publication10/19/82
  3. Examination10/30/84
  4. Allowance07/09/85
  5. Grant04/29/86
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 04/29/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SIG SCHWEIZ INDUSTRIEGES [CH]

Inventors

B. U. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/29/1986

RPI 810

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

Solicitação de exame técnico

#4.1

10/30/1984

RPI 732

Publicação do pedido de patente

#3.1

10/19/1982

RPI 626

Pedido de patente depositado

#2.1

02/24/1982

RPI 592

Carta-patente expirada

#21.1

Patente extinta em 30/12/96

08/19/2008

RPI 1963

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