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Official data from INPI

PROCESSO PARA AUMENTAR O PESO MOLECULAR DE HIDROCARBONETOS E/OU SEUS DERIVADOS, E HIDROCARBONETOS E/OU SEUS DERIVADOS

Prazo de SigiloInvention Patent

Application data

Number

PI8902809

Type

Invention Patent

Filing

06/13/1989

Publication

03/20/1990

Progress at the INPI

  1. Filing06/13/89
  2. Publication03/20/90
  3. Examination03/31/92
  4. Allowance
  5. Grant
  6. In force

Published on 03/20/1990, the application is awaiting technical examination at the INPI, which decides whether the invention meets the patentability requirements.

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Latest action published by the INPI: 07/25/1989. 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

J. D. (pessoa física)

FR

Y. J. (pessoa física)

Technical data

IPC Classification

Priority claims

FR

8808006 · 06/15/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

07/25/1989

RPI 979

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era C07C 3/00.

03/27/2018

RPI 2464

Retificação

#15.3

02/13/1996

RPI 1315

Solicitação de exame técnico

#4.1

03/31/1992

RPI 1113

Publicação do pedido de patente

#3.1

03/20/1990

RPI 1010

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