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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE FERRIERITA E PROCESSO PARA A DESPARAFINAÇÃO CATALÍTICA DE ÓLEOS DE HIDROCARBONETOS.

PublicadaInvention Patent

Application data

Number

PI8606040

Type

Invention Patent

Filing

12/08/1986

Publication

09/15/1987

Progress at the INPI

  1. Filing12/08/86
  2. Publication09/15/87
  3. Examination01/16/90
  4. Allowance07/20/93
  5. Grant02/16/94
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 09/15/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V., companhia holandesa.

NL

Inventors

W. E. (pessoa física)

Technical data

IPC Classification

Priority claims

US

806307 · 12/09/1985

US

893430 · 08/05/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

09/15/1987

RPI 882

Pedido de patente depositado

#2.1

04/22/1987

RPI 861

Carta-patente expirada

#21.1

Patente extinta em 08/12/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

02/16/1994

RPI 1211

Deferimento

#9.1

07/20/1993

RPI 1181

Exigência - art. 36 da LPI

#6.1

09/29/1992

RPI 1139

Conhecimento de parecer técnico

#7.1

02/25/1992

RPI 1108

Solicitação de exame técnico

#4.1

01/16/1990

RPI 1002

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