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Official data from INPI

PROCESSO DE RECUPERAÇÃO DE NÍQUEL DE UMA SOLUÇÃO AQUOSA AMONIACAL

Prazo de SigiloInvention Patent

Application data

Number

PI8902815

Type

Invention Patent

Filing

06/13/1989

Publication

02/01/1990

Progress at the INPI

  1. Filing06/13/89
  2. Publication02/01/90
  3. Examination06/09/92
  4. Allowance
  5. Grant
  6. In force

Published on 02/01/1990, 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: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

H. C. (pessoa física)

US

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Inventors

G. K. (pessoa física)

S. O. (pessoa física)

Technical data

Priority claims

US

206,535 · 06/14/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

07/25/1989

RPI 979

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C22B 23/04; C01G 53/00.

03/27/2018

RPI 2464

Retificação

#15.3

08/29/1995

RPI 1291

Solicitação de exame técnico

#4.1

06/09/1992

RPI 1123

Publicação do pedido de patente

#3.1

02/01/1990

RPI 1004

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