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Official data from INPI

VALVULA PARA SIFONAR LIQUIDOS GASEIFICADOS

ConcedidaUtility Model

Application data

Number

MU6100911

Type

Utility Model

Filing

07/03/1981

Publication

10/27/1981

Progress at the INPI

  1. Filing07/03/81
  2. Publication10/27/81
  3. Examination07/19/83
  4. Allowance03/10/87
  5. Grant09/29/87
  6. Expired12/07/93

The letters patent expired on 12/07/1993: 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

C. I. (pessoa física)

N. F. (pessoa física)

Inventors

C. I. (pessoa física)

N. F. (pessoa física)

Technical data

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

05/12/1987

RPI 864

100

03/10/1987

RPI 855

120

06/17/1986

RPI 817

Petição de recurso

#12.2

01/02/1985

RPI 741

Indeferimento

#9.2

09/11/1984

RPI 725

Solicitação de exame técnico

#4.1

07/19/1983

RPI 665

Publicação antecipada

#3.2

10/27/1981

RPI 575

Carta-patente expirada

#21.1

12/07/1993

RPI 1201

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