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

PROCESSO DE DETERMINAÇÃO DA ESTABILIDADE DE MISTURAS DE ÓLEOS,INCLUINDO ÓLEOS DE XISTO E DE FRAÇÕES DESSES ÓLEOS

Arquivada/ExtintaInvention Patent

Application data

Number

PI9005133

Type

Invention Patent

Filing

10/12/1990

Publication

04/14/1992

Progress at the INPI

  1. Filing10/12/90
  2. Publication04/14/92
  3. Examination11/03/92
  4. Allowance01/14/97
  5. Grant11/25/97
  6. Expired05/21/13

The letters patent expired on 05/21/2013: 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: 05/21/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Petróleo Brasileiro S/A - Petrobrás

RJ, BR

See this company's full portfolio

Inventors

I. B. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 12/10/2010

05/21/2013

RPI 2211

Concessão da patente

#16.1

11/25/1997

RPI 1408

Notificação para pagamento de retribuição

#13.1

05/06/1997

RPI 1379

Republicação - classificação IPC

#15.11

03/04/1997

RPI 1370

Deferimento

#9.1

01/14/1997

RPI 1363

Solicitação de exame técnico

#4.1

11/03/1992

RPI 1144

Publicação do pedido de patente

#3.1

04/14/1992

RPI 1115

Pedido de patente depositado

#2.1

04/09/1991

RPI 1062

Related

Same category

Patent monitoring

Track this patent in real time.

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