(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

PROCESSO PARA A SEPARAÇÃO DE PARA-XILENO

Em AnáliseInvention Patent

Application data

Number

PI8002652

Type

Invention Patent

Filing

04/29/1980

Publication

-

Progress at the INPI

  1. Filing04/29/80
  2. Publication
  3. Examination02/01/83
  4. Allowance10/23/84
  5. Grant04/30/85
  6. Terminated09/26/89

The patent was granted on 04/30/1985 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

See this company's full portfolio

Inventors

M. R. (pessoa física)

V. R. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

7915081 · 05/01/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

09/26/1989

RPI 988

Concessão da patente

#16.1

04/30/1985

RPI 758

Notificação para pagamento de retribuição

#13.1

03/05/1985

RPI 750

Deferimento

#9.1

10/23/1984

RPI 731

Exigência - art. 36 da LPI

#6.1

02/14/1984

RPI 695

Pedido de certificado de adição de invenção

#5.1

07/05/1983

RPI 663

Solicitação de exame técnico

#4.1

02/01/1983

RPI 641

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.