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Official data from INPI

APERFEICOAMENTOS EM VALVULA

ConcedidaUtility Model

Application data

Number

MU6201049

Type

Utility Model

Filing

08/05/1982

Publication

03/13/1984

Progress at the INPI

  1. Filing08/05/82
  2. Publication03/13/84
  3. Examination07/17/84
  4. Allowance02/17/87
  5. Grant09/29/87
  6. Expired11/15/94

The letters patent expired on 11/15/1994: 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: 09/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

METALURGICA IPE S A [BR]

Inventors

S. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/29/1987

RPI 884

Notificação para pagamento de retribuição

#13.1

06/23/1987

RPI 870

Deferimento

#9.1

02/17/1987

RPI 852

Exigência - art. 36 da LPI

#6.1

07/08/1986

RPI 820

Exigência - art. 36 da LPI

#6.1

11/19/1985

RPI 787

Solicitação de exame técnico

#4.1

07/17/1984

RPI 717

Publicação do pedido de patente

#3.1

03/13/1984

RPI 699

Pedido de patente depositado

#2.1

09/21/1982

RPI 622

Carta-patente expirada

#21.1

11/15/1994

RPI 1250

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