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Official data from INPI

VALVULA DINAMIC REGULADORA E SUSTENTADORA DE PRESSAO DE FLUIDOS

ConcedidaUtility Model

Application data

Number

MU6301449

Type

Utility Model

Filing

10/05/1983

Publication

05/14/1985

Progress at the INPI

  1. Filing10/05/83
  2. Publication05/14/85
  3. Examination08/13/85
  4. Allowance03/15/88
  5. Grant08/30/88
  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: 08/30/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PAULO VIEGAS FERNANDES [BR]

VIOLA K VIEGAS FERNANDES [BR]

Inventors

F. [. (pessoa física)

F. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/30/1988

RPI 932

Deferimento

#9.1

03/15/1988

RPI 908

Retificação

#15.6

12/22/1987

RPI 896

15.4

10/27/1987

RPI 888

Republicação - classificação IPC

#15.11

04/14/1987

RPI 860

Exigência - art. 36 da LPI

#6.1

12/23/1986

RPI 844

Solicitação de exame técnico

#4.1

08/13/1985

RPI 773

Publicação do pedido de patente

#3.1

05/14/1985

RPI 760

Pedido de patente depositado

#2.1

12/06/1983

RPI 685

Carta-patente expirada

#21.1

12/07/1993

RPI 1201

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