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Official data from INPI

COMPOSIÇÃO DE ÓLEO LUBRIFICANTE, E, CONCENTRADO DE ÓLEO

Arquivada/ExtintaInvention Patent

Application data

Number

PI8905684

Type

Invention Patent

Filing

11/06/1989

Publication

06/05/1990

Progress at the INPI

  1. Filing11/06/89
  2. Publication06/05/90
  3. Examination06/23/92
  4. Allowance07/28/98
  5. Grant12/29/98
  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

Shell Internationale Research Maatschappij B.V

NL

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Inventors

A. Z. (pessoa física)

NL

T. B. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8826026.0 · 11/07/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 06/11/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

12/29/1998

RPI 1460

Deferimento

#9.1

07/28/1998

RPI 1440

Exigência - art. 36 da LPI

#6.1

10/31/1995

RPI 1300

Solicitação de exame técnico

#4.1

06/23/1992

RPI 1125

Publicação do pedido de patente

#3.1

06/05/1990

RPI 1021

Pedido de patente depositado

#2.1

03/20/1990

RPI 1010

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