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Official data from INPI

PROCESSO DE ENRIQUECIMENTO DE CARVÃO MINERAL PELA ELIMINAÇÃO DAS CINZAS.

IndeferidaInvention Patent

Application data

Number

PI8007723

Type

Invention Patent

Filing

11/25/1980

Publication

07/27/1982

Progress at the INPI

Under appeal
  1. Filing11/25/80
  2. Publication07/27/82
  3. Examination02/21/84
  4. Refused04/08/86
  5. Grant
  6. In force

The application was refused by the INPI on 04/08/1986. The invention was never patented.

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Latest action published by the INPI: 04/08/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. G. (pessoa física)

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Inventors

G. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

04/08/1986

RPI 807

Conhecimento de parecer técnico

#7.1

04/23/1985

RPI 757

Solicitação de exame técnico

#4.1

02/21/1984

RPI 696

Publicação do pedido de patente

#3.1

07/27/1982

RPI 614

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