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Official data from INPI

PROCESSO PARA O MELHORAMENTO DE CONTROLE DE EQUILIBRIO E SIMULTANAEA PRODUCAO DE VAPOR DE AGUA COM ELEVADA PRESSAO NA PREPARACAO DE METANOL

ConcedidaInvention Patent

Application data

Number

PI8104842

Type

Invention Patent

Filing

07/29/1980

Publication

04/13/1982

Progress at the INPI

  1. Filing07/29/80
  2. Publication04/13/82
  3. Examination06/12/84
  4. Allowance04/16/85
  5. Grant10/01/85
  6. Terminated09/13/94

The patent was granted on 10/01/1985 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: 10/01/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

METALLGESELLSCHAFT AG

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Inventors

S. E. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/01/1985

RPI 780

Deferimento

#9.1

04/16/1985

RPI 756

Solicitação de exame técnico

#4.1

06/12/1984

RPI 712

Publicação do pedido de patente

#3.1

04/13/1982

RPI 599

Anuidade - prazo legal encerrado

#18.2

09/13/1994

RPI 1241

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