Official data from INPI

CONDUCAO DE GAS DE HIDROGENACAO EM INSTALACOES DE LIQUEFACAO DE CARVAO

Em AnáliseInvention Patent

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Application data

Number

PI8500578

Type

Invention Patent

Filing

01/19/1984

Publication

09/24/1985

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Progress at the INPI

Under appeal

Filing01/19/84
Publication09/24/85
Examination11/03/87
Refused02/13/91
Grant
In force

The application was refused by the INPI on 02/13/1991. The invention was never patented.

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Latest action published by the INPI: 11/14/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

RUHRKOHLE AG [DE]

Inventors

T. H. (pessoa física)

W. E. (pessoa física)

Technical data

IPC Classification

C10G 45/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Conhecimento de parecer técnico

#7.1

11/14/1989

RPI 995

Solicitação de exame técnico

#4.1

11/03/1987

RPI 889

Publicação do pedido de patente

#3.1

09/24/1985

RPI 779

Pedido de patente depositado

#2.1

04/30/1985

RPI 758

Indeferimento

#9.2

02/13/1991

RPI 1054

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