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Official data from INPI

RECUPERAÇÃO DE ÓLEO POR COMBUSTÃO IN-SITU.

Em AnáliseInvention Patent

Application data

Number

PI8205528

Type

Invention Patent

Filing

09/20/1982

Publication

08/30/1983

Progress at the INPI

  1. Filing09/20/82
  2. Publication08/30/83
  3. Examination01/24/84
  4. Refused10/25/88
  5. Grant
  6. In force

The application was refused on 10/25/1988 and the appeal did not change the decision. The invention was never patented and the technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 02/08/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Canadian Liquid Air Ltd

CA

Inventors

L. H. (pessoa física)

S. G. (pessoa física)

Technical data

IPC Classification

Priority claims

CA

386.166 · 09/18/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

15.7

02/08/1989

RPI 955

111

10/25/1988

RPI 940

Petição de recurso

#12.2

11/10/1987

RPI 890

Republicação - classificação IPC

#15.11

08/18/1987

RPI 878

Indeferimento

#9.2

06/30/1987

RPI 871

Conhecimento de parecer técnico

#7.1

06/17/1986

RPI 817

6.2

03/19/1985

RPI 752

Solicitação de exame técnico

#4.1

01/24/1984

RPI 692

Publicação do pedido de patente

#3.1

08/30/1983

RPI 671

Pedido de patente depositado

#2.1

11/09/1982

RPI 629

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