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Official data from INPI

DISPOSITIVO PARA CONTROLAR A DESCARGA DE MATERIAL A PARTIR DE UM RESERVATÓRIO DE ARMAZENAGEM

Prazo de SigiloInvention Patent

Application data

Number

PI8903115

Type

Invention Patent

Filing

06/26/1989

Publication

01/02/1991

Progress at the INPI

  1. Filing06/26/89
  2. Publication01/02/91
  3. Examination04/27/93
  4. Allowance02/17/99
  5. Grant08/24/99
  6. Expired12/26/12

The letters patent expired on 12/26/2012: 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: 08/22/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CPM do Brasil Indústria e Comércio Ltda

SP, BR

Inventors

E. T. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

08/22/1989

RPI 983

Carta-patente expirada

#21.1

Patente extinta em 24/08/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

08/24/1999

RPI 1494

Deferimento

#9.1

02/17/1999

RPI 1467

6.8

09/30/1997

RPI 1400

Exigência - art. 36 da LPI

#6.1

03/25/1997

RPI 1373

Exigência - art. 36 da LPI

#6.1

06/11/1996

RPI 1332

Solicitação de exame técnico

#4.1

04/27/1993

RPI 1169

Publicação do pedido de patente

#3.1

01/02/1991

RPI 1048

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