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Official data from INPI

COMPOSTO, COMPOSIÇÃO DE ÓLEO LUBRIFICANTE E CONCENTRADO.

ConcedidaInvention Patent

Application data

Number

PI7905065

Type

Invention Patent

Filing

08/07/1979

Publication

-

Progress at the INPI

  1. Filing08/07/79
  2. Publication
  3. Examination
  4. Allowance09/15/87
  5. Grant04/26/88
  6. Expired04/18/95

The letters patent expired on 04/18/1995: 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: 04/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Chevron Research Company.

US

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Inventors

L. J. (pessoa física)

Technical data

IPC Classification

Priority claims

US

931.232 · 08/08/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/26/1988

RPI 914

Notificação para pagamento de retribuição

#13.1

01/26/1988

RPI 901

Deferimento

#9.1

09/15/1987

RPI 882

Republicação - classificação IPC

#15.11

06/18/1985

RPI 765

Exigência - art. 36 da LPI

#6.1

10/23/1984

RPI 731

Exigência - art. 36 da LPI

#6.1

01/31/1984

RPI 693

6.2

04/06/1982

RPI 598

Carta-patente expirada

#21.1

04/18/1995

RPI 1272

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