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Official data from INPI

PROCESSO PARA PREPARAR CARBONO ATIVADO GRANULAR DURO E RESPECTIVO CARBONO ATIVADO OBTIDO

ConcedidaInvention Patent

Application data

Number

PI7901324

Type

Invention Patent

Filing

03/06/1978

Publication

-

Progress at the INPI

  1. Filing03/06/78
  2. Publication
  3. Examination12/08/81
  4. Allowance08/30/83
  5. Grant03/27/84
  6. Terminated01/28/92

The patent was granted on 03/27/1984 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 03/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CARBORUNDUM CO

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Inventors

M. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

12/20/1983

RPI 687

Deferimento

#9.1

08/30/1983

RPI 671

Exigência - art. 36 da LPI

#6.1

11/16/1982

RPI 630

Solicitação de exame técnico

#4.1

12/08/1981

RPI 581

Anuidade - prazo legal encerrado

#18.2

01/28/1992

RPI 1104

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