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Official data from INPI

SISTEMA PRÉ-EMULSIFICADOR UTILIZADO NO PREPARO DE EMULSÕES COMBUSTÍVEIS E PROCESSO DE PRÉ-EMULSIFICAÇÃO UTILIZANDO REFERIDO SISTEMA

Arquivada/ExtintaInvention Patent

Application data

Number

PI8902127

Type

Invention Patent

Filing

05/08/1989

Publication

11/13/1990

Progress at the INPI

  1. Filing05/08/89
  2. Publication11/13/90
  3. Examination02/19/91
  4. Allowance06/29/99
  5. Grant12/28/99
  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: 12/26/2012. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Petróleo Brasileiro S/A - Petrobrás

RJ, BR

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Inventors

A. P. (pessoa física)

BR

R. M. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 28/12/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

12/28/1999

RPI 1512

Deferimento

#9.1

06/29/1999

RPI 1486

Solicitação de exame técnico

#4.1

02/19/1991

RPI 1055

Publicação do pedido de patente

#3.1

11/13/1990

RPI 1041

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