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Official data from INPI

PROCESSO PARA A OBTENCAO HIDROMETALURGICA DE METAIS NOBRES A PARTIR DE MATERIAIS CONTENDO OS MESMOS,MEDIANTE TRATAMENTO COM TIOUREIA

IndeferidaInvention Patent

Application data

Number

PI8400739

Type

Invention Patent

Filing

02/22/1983

Publication

09/25/1984

Progress at the INPI

Under appeal
  1. Filing02/22/83
  2. Publication09/25/84
  3. Examination08/26/86
  4. Refused10/24/89
  5. Grant
  6. In force

The application was refused by the INPI on 10/24/1989. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SUEDDEUTSCHE KALKSTICKSTOFF [DE]

Inventors

S. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

10/24/1989

RPI 992

Conhecimento de parecer técnico

#7.1

03/07/1989

RPI 959

6.2

06/28/1988

RPI 923

Solicitação de exame técnico

#4.1

08/26/1986

RPI 827

Publicação do pedido de patente

#3.1

09/25/1984

RPI 727

Pedido de patente depositado

#2.1

05/08/1984

RPI 707

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