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Official data from INPI

PROCESSO DE DESHIDRATAÇÃO DE MINÉRIO E COMPOSIÇÕES PARA O MESMO

Em AnáliseInvention Patent

Application data

Number

PI9005090

Type

Invention Patent

Filing

10/11/1990

Publication

09/17/1991

Progress at the INPI

  1. Filing10/11/90
  2. Publication09/17/91
  3. Examination12/14/93
  4. Allowance
  5. Grant
  6. In force

Published on 09/17/1991, the application is awaiting technical examination at the INPI, which decides whether the invention meets the patentability requirements.

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Latest action published by the INPI: 03/27/2018. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Sherex Chemical Company, Inc

US

Inventors

J. F. (pessoa física)

J. C. (pessoa física)

O. P. (pessoa física)

Technical data

IPC Classification

Priority claims

US

421,092 · 10/13/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: B01D 37/06; C02F 11/14.

03/27/2018

RPI 2464

Retificação

#15.3

12/12/1995

RPI 1306

Solicitação de exame técnico

#4.1

12/14/1993

RPI 1202

Publicação do pedido de patente

#3.1

09/17/1991

RPI 1085

Pedido de patente depositado

#2.1

04/09/1991

RPI 1062

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