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Official data from INPI

PROCESSO APERFEICOADO PARA SEPARAR UMA LAMA DE ALIMENTACAO PRODUZIDA PELA HIDROGENACAO EM ALTA TEMPERATURA DE UM COMBUSTIVEL HIDROCARBONETADO SOLIDO

Em AnáliseInvention Patent

Application data

Number

PI7905040

Type

Invention Patent

Filing

08/06/1979

Publication

-

Progress at the INPI

  1. Filing08/06/79
  2. Publication
  3. Examination05/17/83
  4. Allowance01/31/84
  5. Grant08/28/84
  6. Terminated07/12/88

The patent was granted on 08/28/1984 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: 07/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DOW CHEMICAL CO

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Inventors

M. N. (pessoa física)

Q. G. (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

08/28/1984

RPI 723

Notificação para pagamento de retribuição

#13.1

05/15/1984

RPI 708

Deferimento

#9.1

01/31/1984

RPI 693

Solicitação de exame técnico

#4.1

05/17/1983

RPI 656

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