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Official data from INPI

FORMULAÇÃO DE ÓLEO LUBRIFICANTE

ConcedidaInvention Patent

Application data

Number

PI8206166

Type

Invention Patent

Filing

10/22/1982

Publication

09/20/1983

Progress at the INPI

  1. Filing10/22/82
  2. Publication09/20/83
  3. Examination09/24/85
  4. Allowance05/09/89
  5. Grant11/28/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Chevron Research Company

US

See this company's full portfolio

Inventors

V. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

314.632 · 10/26/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/28/1989

RPI 997

Notificação para pagamento de retribuição

#13.1

09/05/1989

RPI 985

Deferimento

#9.1

05/09/1989

RPI 968

Exigência - art. 36 da LPI

#6.1

04/05/1988

RPI 911

Solicitação de exame técnico

#4.1

09/24/1985

RPI 779

Publicação do pedido de patente

#3.1

09/20/1983

RPI 674

Pedido de patente depositado

#2.1

12/14/1982

RPI 634

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C10M 1/54; C10M 3/48.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

Patente extinta em 22/10/97

07/01/2008

RPI 1956

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