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Official data from INPI

PROCESSO PARA A RECUPERACAO DE PARTICULAS FINAS DE CARVAO CONTIDAS EM UMA SUSPENSAO DE CARVAO FINAMENTE DIVIDIDO

Em AnáliseInvention Patent

Application data

Number

PI8105135

Type

Invention Patent

Filing

08/10/1981

Publication

03/15/1983

Progress at the INPI

  1. Filing08/10/81
  2. Publication03/15/83
  3. Examination08/09/83
  4. Allowance09/25/84
  5. Grant03/26/85
  6. Terminated07/12/88

The patent was granted on 03/26/1985 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: 07/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HITACHI SHIPBUILDING ENG CO [JP]

Inventors

K. H. (pessoa física)

N. Y. (pessoa física)

O. O. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

07/12/1988

RPI 925

Concessão da patente

#16.1

03/26/1985

RPI 753

Notificação para pagamento de retribuição

#13.1

01/29/1985

RPI 745

Deferimento

#9.1

09/25/1984

RPI 727

Solicitação de exame técnico

#4.1

08/09/1983

RPI 668

Publicação do pedido de patente

#3.1

03/15/1983

RPI 647

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