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

PROCESSO DE TRATAMENTO PELO OZÔNIO DE MATERIAL LIGNOCELULÓSICO, ESPECIALMENTE DE PASTA DE PAPEL E REATOR PARA A REALIZAÇÃO DESTE PROCESSO

PublicadaInvention Patent

Application data

Number

PI8804806

Type

Invention Patent

Filing

09/16/1988

Publication

04/25/1989

Progress at the INPI

  1. Filing09/16/88
  2. Publication04/25/89
  3. Examination05/14/91
  4. Allowance03/04/97
  5. Grant10/28/97
  6. Expired12/18/12

The letters patent expired on 12/18/2012: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 04/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Degremont

FR

See this company's full portfolio

Inventors

C. C. (pessoa física)

FR

P. J. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

87.12890 · 09/17/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

04/25/1989

RPI 966

Pedido de patente depositado

#2.1

02/08/1989

RPI 955

Carta-patente expirada

#21.1

Patente extinta em 16/09/2008

12/18/2012

RPI 2189

Concessão da patente

#16.1

10/28/1997

RPI 1404

Notificação para pagamento de retribuição

#13.1

09/23/1997

RPI 1399

Deferimento

#9.1

03/04/1997

RPI 1370

Exigência - art. 36 da LPI

#6.1

10/03/1995

RPI 1296

Solicitação de exame técnico

#4.1

05/14/1991

RPI 1067

Related

From the same holder

Patent monitoring

Track this patent in real time.

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