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Official data from INPI

PROCESSO PARA A PREPARAÇÃO E SEPARAÇÃO DE PARA-XILENO, E PRODUTO OBTIDO

Em AnáliseInvention Patent

Application data

Number

PI7900692

Type

Invention Patent

Filing

02/05/1979

Publication

-

Progress at the INPI

  1. Filing02/05/79
  2. Publication
  3. Examination
  4. Allowance09/20/83
  5. Grant03/27/84
  6. Terminated10/03/89

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.

Talk to a specialist

Latest action published by the INPI: 10/03/1989. 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

R. V. (pessoa física)

NL

R. M. (pessoa física)

NL

Technical data

Priority claims

NL

7801367 · 02/07/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

10/03/1989

RPI 989

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

01/03/1984

RPI 689

Deferimento

#9.1

09/20/1983

RPI 674

Exigência - art. 36 da LPI

#6.1

02/22/1983

RPI 644

6.2

06/22/1982

RPI 609

Pedido de certificado de adição de invenção

#5.1

04/06/1982

RPI 598

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