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Official data from INPI

PROCESSO PARA A PREPARAÇÃO E A SEPARAÇÃO DE ÉTER METIL TERBUTÍLICO

ConcedidaInvention Patent

Application data

Number

PI8205855

Type

Invention Patent

Filing

10/06/1982

Publication

03/29/1983

Progress at the INPI

  1. Filing10/06/82
  2. Publication03/29/83
  3. Examination08/16/83
  4. Allowance05/07/85
  5. Grant11/26/85
  6. Terminated09/10/96

The patent was granted on 11/26/1985 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: 11/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Petroflex Industria e Comercio S/A

RJ, BR

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Inventors

G. T. (pessoa física)

IT

G. B. (pessoa física)

IT

Technical data

Priority claims

IT

24 574 A/81 · 10/20/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/26/1985

RPI 788

Notificação para pagamento de retribuição

#13.1

08/27/1985

RPI 775

Deferimento

#9.1

05/07/1985

RPI 759

Solicitação de exame técnico

#4.1

08/16/1983

RPI 669

Publicação antecipada

#3.2

03/29/1983

RPI 649

Pedido de patente depositado

#2.1

11/30/1982

RPI 632

Anuidade - prazo legal encerrado

#18.2

09/10/1996

RPI 1345

22.2

08/27/1996

RPI 1343

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