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Official data from INPI

PROCESSO PARA PURIFICAR GASES DE DIOXIDO DE ENXOFRE QUE CONTEM TRIOXIDO DE ENXOFRE E COMPOSTOS DE HALOGENEOS

Em AnáliseInvention Patent

Application data

Number

PI7701076

Type

Invention Patent

Filing

01/27/1977

Publication

-

Progress at the INPI

  1. Filing01/27/77
  2. Publication
  3. Examination
  4. Allowance08/23/83
  5. Grant03/27/84
  6. Terminated12/08/87

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.

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Latest action published by the INPI: 12/08/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

KEMIRA OY

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Inventors

H. E. (pessoa física)

H. H. (pessoa física)

J. L. (pessoa física)

L. L. (pessoa física)

R. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

12/08/1987

RPI 894

16.3

06/19/1984

RPI 713

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

12/13/1983

RPI 686

Deferimento

#9.1

08/23/1983

RPI 670

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