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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE UMA EMULSÃO DE ALTA RELAÇÃO DE FASE INTERNA (ARFI) DE ÓLEOS VISCOSOS EM ÁGUA

Em AnáliseInvention Patent

Application data

Number

PI8505279

Type

Invention Patent

Filing

02/14/1985

Publication

02/18/1986

Progress at the INPI

  1. Filing02/14/85
  2. Publication02/18/86
  3. Examination06/17/86
  4. Allowance02/22/94
  5. Grant10/25/94
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 10/21/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Intevep, S A

VE

The British Petroleum Company Plc

GB

See this company's full portfolio

Inventors

A. T. (pessoa física)

GB

M. C. (pessoa física)

VE

S. T. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8404347 · 02/18/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de certificado de adição de invenção

#5.1

10/21/1986

RPI 835

Solicitação de exame técnico

#4.1

06/17/1986

RPI 817

Notificação de entrada na fase nacional - PCT

#1.3

02/18/1986

RPI 800

Carta-patente expirada

#21.1

Patente extinta em 14/02/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

10/25/1994

RPI 1247

Deferimento

#9.1

02/22/1994

RPI 1212

Exigência - art. 36 da LPI

#6.1

01/26/1993

RPI 1156

Exigência - art. 36 da LPI

#6.1

05/28/1991

RPI 1069

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