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Invention PatentPI8802450

PROCESSO DE REDUÇÃO DOS TEORES DE FÓSFORO E ALUMINA DE MINÉRIOS DE FERRO

S.A. Mineração da Trindade - SAMITRI

Prazo de SigiloIPC C22B 1/11

Progress at the INPI

Technical opinion to answer
  1. Examination08/28/90

The INPI issued a technical opinion on patentability. The applicant must respond for examination to continue.

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Latest action published by the INPI: 10/11/1988. We update with every new RPI gazette, published weekly.

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

10/11/1988

RPI 938

Pedido de patente depositado

2.1

10/10/1995

RPI 1297

Retificação

15.3

12/13/1994

RPI 1254

Conhecimento de parecer técnico

7.1

08/28/1990

RPI 1030

Solicitação de exame técnico

4.1

01/02/1990

RPI 1000

Publicação do pedido de patente

3.1