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

Processo para a preparação de sílica e de silicatos metálicos.

ConcedidaInvention Patent

Application data

Number

PI8104429

Type

Invention Patent

Filing

07/10/1981

Publication

03/30/1982

Progress at the INPI

  1. Filing07/10/81
  2. Publication03/30/82
  3. Examination03/27/84
  4. Allowance07/09/85
  5. Grant12/31/85
  6. Terminated09/13/94

The patent was granted on 12/31/1985 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: 12/31/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rhone-Poulenc Industries

FR

See this company's full portfolio

Inventors

C. R. (pessoa física)

Technical data

IPC Classification

Priority claims

FR

80 15460 · 07/11/1980

FR

81 02640 · 02/11/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

Exigência - art. 36 da LPI

#6.1

02/26/1985

RPI 749

6.2

10/02/1984

RPI 728

Solicitação de exame técnico

#4.1

03/27/1984

RPI 701

Publicação do pedido de patente

#3.1

03/30/1982

RPI 597

Anuidade - prazo legal encerrado

#18.2

09/13/1994

RPI 1241

Patent monitoring

Track this patent in real time.

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