Official data from INPI

PROCESSO PARA A PREPARACAO DE NITRATO DE POTASSIO A PARTIR DE CLORETO DE POTASSIO E ACIDO NITRICO

Em AnáliseInvention Patent

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Application data

Number

PI8504497

Type

Invention Patent

Filing

09/16/1985

Publication

04/22/1987

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Progress at the INPI

Under appeal

Filing09/16/85
Publication04/22/87
Examination08/11/87
Refused10/09/90
Grant
In force

The application was refused by the INPI on 10/09/1990. The invention was never patented.

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Latest action published by the INPI: 08/11/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

UNION EXPLOSIVOS RIO TINTO [ES]

Inventors

P. S. (pessoa física)

Technical data

IPC Classification

C01D 9/04

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

08/11/1987

RPI 877

Publicação do pedido de patente

#3.1

04/22/1987

RPI 861

Pedido de patente depositado

#2.1

11/26/1985

RPI 788

Indeferimento

#9.2

10/09/1990

RPI 1036

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