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Official data from INPI

Processo para a preparação de misturas estáveis carvão-água.

ConcedidaInvention Patent
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Application data

Number

PI8401913

Type

Invention Patent

Filing

04/25/1984

Publication

12/04/1984
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Progress at the INPI

  1. Filing04/25/84
  2. Publication12/04/84
  3. Examination10/29/85
  4. Allowance06/21/88
  5. Grant04/25/89
  6. Terminated06/06/95

The patent was granted on 04/25/1989 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 04/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Centro Sperimentale Metallurgico S.p.A., companhia italiana

IT

Inventors

G. M. (pessoa física)

L. P. (pessoa física)

Technical data

IPC Classification

C10L 1/32

Priority claims

IT

48185 A83 · 04/29/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/25/1989

RPI 966

Notificação para pagamento de retribuição

#13.1

10/25/1988

RPI 940

Deferimento

#9.1

06/21/1988

RPI 922

Solicitação de exame técnico

#4.1

10/29/1985

RPI 784

Publicação do pedido de patente

#3.1

12/04/1984

RPI 737

Pedido de patente depositado

#2.1

07/03/1984

RPI 715

Anuidade - prazo legal encerrado

#18.2

06/06/1995

RPI 1279

20.4

10/09/1990

RPI 1036

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