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Official data from INPI

PROCESSO PARA A FABRICAÇÃO DE ÓLEOS BASES DE LUBRIFICANTES E ÓLEOS BASES ASSIM PRODUZIDOS

Em AnáliseInvention Patent

Application data

Number

PI8505038

Type

Invention Patent

Filing

10/10/1985

Publication

07/29/1986

Progress at the INPI

  1. Filing10/10/85
  2. Publication07/29/86
  3. Examination07/05/88
  4. Allowance06/25/91
  5. Grant12/31/91
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 07/05/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

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Inventors

G. M. (pessoa física)

J. J. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

8425837 · 10/12/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

07/05/1988

RPI 924

Publicação do pedido de patente

#3.1

07/29/1986

RPI 823

Pedido de patente depositado

#2.1

12/17/1985

RPI 791

Carta-patente expirada

#21.1

Patente extinta em 10/10/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

12/31/1991

RPI 1100

Republicação - classificação IPC

#15.11

11/05/1991

RPI 1092

Notificação para pagamento de retribuição

#13.1

10/22/1991

RPI 1090

Deferimento

#9.1

06/25/1991

RPI 1073

Exigência - art. 36 da LPI

#6.1

11/27/1990

RPI 1043

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