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Official data from INPI

PROCESSO PAR5A RECUPERAÇÃO DE ÓLEO DE UM RESERVATÓRIO SUBTERRÂNEO

Em AnáliseInvention Patent
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Application data

Number

PI8603965

Type

Invention Patent

Filing

08/20/1986

Publication

03/31/1987
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Progress at the INPI

  1. Filing08/20/86
  2. Publication03/31/87
  3. Abandoned03/21/89
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.

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Latest action published by the INPI: 03/21/1989. 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

H. S. (pessoa física)

Technical data

IPC Classification

C09K 8/58E21B 43/20

Priority claims

US

768263 · 08/22/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

03/21/1989

RPI 961

Publicação do pedido de patente

#3.1

03/31/1987

RPI 858

Pedido de patente depositado

#2.1

03/17/1987

RPI 856

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era C09K 7/02.

03/27/2018

RPI 2464

Arquivamento - Art. 36 §1° da LPI

#11.2

03/16/1993

RPI 1163

Republicação - classificação IPC

#15.11

09/15/1992

RPI 1137

Exigência - art. 36 da LPI

#6.1

10/22/1991

RPI 1090

6.2

08/07/1990

RPI 1027

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