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Official data from INPI

COMPOSIÇÃO DE ÓLEO LUBRIFICANTE, E, CONCENTRADO

PublicadaInvention Patent

Application data

Number

PI8806066

Type

Invention Patent

Filing

11/18/1988

Publication

08/08/1989

Progress at the INPI

  1. Filing11/18/88
  2. Publication08/08/89
  3. Examination08/27/91
  4. Allowance03/11/97
  5. Grant10/28/97
  6. Expired12/18/12

The letters patent expired on 12/18/2012: 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: 08/08/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Chemical Patents, Inc

US

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Inventors

D. C. (pessoa física)

US

E. O. (pessoa física)

US

Technical data

Priority claims

US

123,532 · 11/20/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

08/08/1989

RPI 981

Pedido de patente depositado

#2.1

04/04/1989

RPI 963

Carta-patente expirada

#21.1

Patente extinta em 18/11/2008

12/18/2012

RPI 2189

Concessão da patente

#16.1

10/28/1997

RPI 1404

Notificação para pagamento de retribuição

#13.1

10/14/1997

RPI 1402

Deferimento

#9.1

03/11/1997

RPI 1371

Exigência - art. 36 da LPI

#6.1

08/06/1996

RPI 1340

Exigência - art. 36 da LPI

#6.1

07/18/1995

RPI 1285

Solicitação de exame técnico

#4.1

08/27/1991

RPI 1082

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