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Official data from INPI

PROCESSO PARA REMOÇÃO DE GASES ÁCIDOS DE GASES ÁCIDOS DE MISTURAS QUE OS CONTÉM, E, INSTALAÇÃO PARA CONDUZIR O PROCESSO

ConcedidaInvention Patent

Application data

Number

PI7908404

Type

Invention Patent

Filing

12/20/1979

Publication

-

Progress at the INPI

  1. Filing12/20/79
  2. Publication
  3. Examination11/09/82
  4. Allowance12/06/83
  5. Grant05/29/84
  6. Terminated01/28/92

The patent was granted on 05/29/1984 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: 05/29/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

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Inventors

D. R. (pessoa física)

K. E. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

50121/78 · 12/28/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/29/1984

RPI 710

Notificação para pagamento de retribuição

#13.1

03/27/1984

RPI 701

Deferimento

#9.1

12/06/1983

RPI 685

Exigência - art. 36 da LPI

#6.1

06/28/1983

RPI 662

Solicitação de exame técnico

#4.1

11/09/1982

RPI 629

Anuidade - prazo legal encerrado

#18.2

01/28/1992

RPI 1104

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