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

PROCESSO PARA CONVERSÃO DE ÓLEO RESIDUAL E PROCESSO PARA CONVERTER PORÇÃO RESIDUAL DE ÓLEO CRU

Em AnáliseInvention PatentPCT · US1985001477

Application data

Number

PI8507250

Type

Invention Patent

Filing

08/02/1985

Publication

10/27/1987

PCT

US1985001477

Progress at the INPI

  1. Filing08/02/85
  2. Publication10/27/87
  3. Examination03/21/89
  4. Allowance12/10/96
  5. Grant08/25/98
  6. Expired08/26/08

The letters patent expired on 08/26/2008: 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: 03/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Stone & Webster Engineering Corporation

US

Stone & Webster Process Technology, Inc.

US

Total Engineering And Research Company

US

See this company's full portfolio

Inventors

J. M. (pessoa física)

FR

R. N. (pessoa física)

US

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

03/21/1989

RPI 961

Notificação de entrada na fase nacional - PCT

#1.3

10/27/1987

RPI 888

Carta-patente expirada

#21.1

Patente extinta em 25/08/2008

08/26/2008

RPI 1964

Transferência deferida

#25.1

Transferido de: Stone & Webster Engineering Corporation

12/13/2005

RPI 1823

Concessão da patente

#16.1

08/25/1998

RPI 1444

Notificação para pagamento de retribuição

#13.1

05/13/1997

RPI 1380

Deferimento

#9.1

12/10/1996

RPI 1358

Exigência - art. 36 da LPI

#6.1

02/27/1996

RPI 1317

Conhecimento de parecer técnico

#7.1

06/20/1995

RPI 1281

14.1

05/25/1993

RPI 1173

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.