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Official data from INPI

COMPOSIÇÃO DE ÓLEO LUBRIFICANTE.

ConcedidaInvention Patent

Application data

Number

PI7907335

Type

Invention Patent

Filing

11/12/1979

Publication

-

Progress at the INPI

  1. Filing11/12/79
  2. Publication
  3. Examination07/20/82
  4. Allowance05/17/88
  5. Grant10/25/88
  6. Expired05/02/95

The letters patent expired on 05/02/1995: 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: 10/25/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E. C. (pessoa física)

US

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Inventors

M. R. (pessoa física)

Technical data

IPC Classification

Priority claims

US

959.934 · 11/13/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/25/1988

RPI 940

Notificação para pagamento de retribuição

#13.1

09/06/1988

RPI 933

Deferimento

#9.1

05/17/1988

RPI 917

Exigência - art. 36 da LPI

#6.1

09/22/1987

RPI 883

Solicitação de exame técnico

#4.1

07/20/1982

RPI 613

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era C10M 1/14.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

05/02/1995

RPI 1274

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