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

PROCESSO PARA A PREPARAÇÃO DE DERIVADOS DE ÉTER DIFENÍLICO.

PublicadaInvention Patent

Application data

Number

PI8702010

Type

Invention Patent

Filing

04/27/1987

Publication

11/01/1988

Progress at the INPI

  1. Filing04/27/87
  2. Publication11/01/88
  3. Examination12/18/90
  4. Allowance02/24/93
  5. Grant08/31/93
  6. Terminated12/31/96

The patent was granted on 08/31/1993 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: 11/01/1988. 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

D. J. (pessoa física)

GB

I. G. (pessoa física)

GB

M. C. (pessoa física)

GB

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/01/1988

RPI 941

Pedido de patente depositado

#2.1

07/28/1987

RPI 875

Anuidade - prazo legal encerrado

#18.2

12/31/1996

RPI 1361

Concessão da patente

#16.1

08/31/1993

RPI 1187

Notificação para pagamento de retribuição

#13.1

06/08/1993

RPI 1175

Deferimento

#9.1

02/24/1993

RPI 1160

Exigência - art. 36 da LPI

#6.1

08/11/1992

RPI 1132

Exigência - art. 36 da LPI

#6.1

11/26/1991

RPI 1095

Solicitação de exame técnico

#4.1

12/18/1990

RPI 1046

Patent monitoring

Track this patent in real time.

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