(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE UM ÓLEO DE BASE LUBRIFICANTE

PublicadaInvention Patent

Application data

Number

PI8900126

Type

Invention Patent

Filing

01/12/1989

Publication

09/05/1989

Progress at the INPI

  1. Filing01/12/89
  2. Publication09/05/89
  3. Examination09/10/91
  4. Allowance11/14/95
  5. Grant09/24/96
  6. Expired12/15/09

The letters patent expired on 12/15/2009: 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: 09/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

See this company's full portfolio

Inventors

G. D. (pessoa física)

FR

J. L. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

8800360 · 01/14/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

09/05/1989

RPI 985

Pedido de patente depositado

#2.1

02/28/1989

RPI 958

Carta-patente expirada

#21.1

Patente extinta em 12/01/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

09/24/1996

RPI 1347

Deferimento

#9.1

11/14/1995

RPI 1302

Exigência - art. 36 da LPI

#6.1

09/27/1994

RPI 1243

Solicitação de exame técnico

#4.1

09/10/1991

RPI 1084

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.