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Official data from INPI

DESESTABILIZADOR ELETROSTÁTICO DE EMULSÕES

Arquivada/ExtintaInvention Patent

Application data

Number

PI9601219

Type

Invention Patent

Filing

04/01/1996

Publication

01/06/1998

Progress at the INPI

  1. Filing04/01/96
  2. Publication01/06/98
  3. Examination
  4. Allowance04/09/02
  5. Grant07/23/02
  6. Expired05/03/16

The letters patent expired on 05/03/2016: 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: 05/03/2016. 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. F. (pessoa física)

BR

C. C. (pessoa física)

BR

R. O. (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 01/04/2016

05/03/2016

RPI 2365

Concessão da patente

#16.1

07/23/2002

RPI 1646

Deferimento

#9.1

04/09/2002

RPI 1631

Exigência - art. 36 da LPI

#6.1

07/10/2001

RPI 1592

Publicação do pedido de patente

#3.1

01/06/1998

RPI 1411

Pedido de patente depositado

#2.1

06/18/1996

RPI 1333

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