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Official data from INPI

COMPOSIÇÃO LUBRIFICANTE PARA CÁRTER DE MOTORES DE AUTOMÓVEIS, CONCENTRADO, E, COMPOSIÇÃO LUBRIFICANTE ISENTA DE ZINCO E ISENTA DE FÓSFORO

Em AnáliseInvention Patent

Application data

Number

PI8800836

Type

Invention Patent

Filing

02/26/1988

Publication

10/04/1988

Progress at the INPI

  1. Filing02/26/88
  2. Publication10/04/88
  3. Examination06/27/89
  4. Allowance12/10/96
  5. Grant08/26/97
  6. Expired08/26/08

The letters patent expired on 08/26/2008: 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: 06/27/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Chemical Patents, Inc

US

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Inventors

F. G. (pessoa física)

GB

J. M. (pessoa física)

GB

T. C. (pessoa física)

GB

Technical data

Priority claims

GB

8704683 · 02/27/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

06/27/1989

RPI 975

Publicação do pedido de patente

#3.1

10/04/1988

RPI 937

Pedido de patente depositado

#2.1

05/31/1988

RPI 919

Carta-patente expirada

#21.1

Patente extinta em 26/02/2008

08/26/2008

RPI 1964

Concessão da patente

#16.1

08/26/1997

RPI 1395

Deferimento

#9.1

12/10/1996

RPI 1358

Exigência - art. 36 da LPI

#6.1

03/26/1996

RPI 1321

Exigência - art. 36 da LPI

#6.1

02/21/1995

RPI 1264

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