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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE HIDROCARBONETOS

Em AnáliseInvention Patent

Application data

Number

PI8500867

Type

Invention Patent

Filing

02/27/1985

Publication

10/15/1985

Progress at the INPI

  1. Filing02/27/85
  2. Publication10/15/85
  3. Examination09/22/87
  4. Allowance02/13/91
  5. Grant09/24/91
  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: 09/22/1987. 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

M. S. (pessoa física)

Technical data

IPC Classification

Priority claims

NL

8400608 · 02/28/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

09/22/1987

RPI 883

Publicação do pedido de patente

#3.1

10/15/1985

RPI 782

Pedido de patente depositado

#2.1

05/14/1985

RPI 760

Carta-patente expirada

#21.1

Patente extinta em 27/02/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

09/24/1991

RPI 1086

Notificação para pagamento de retribuição

#13.1

05/28/1991

RPI 1069

Deferimento

#9.1

02/13/1991

RPI 1054

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