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

COMPOSICAO LUBRIFICANTE,CONCENTRADO DE ADITIVO,PROCESSO PARA PREPARACAO DE UMA COMPOSICAO SULFURIZADA,PROCESSO PARA PREPARACAO DE UMA COMPOSICAO DE ISOBUTILENO SULFURIZADO,E COMPOSICAO DE ISOBUTILENO SULFURIZADA

ConcedidaInvention Patent

Application data

Number

PI7805819

Type

Invention Patent

Filing

09/06/1978

Publication

-

Progress at the INPI

  1. Filing09/06/78
  2. Publication
  3. Examination01/12/82
  4. Allowance11/10/87
  5. Grant06/28/88
  6. Expired05/03/94

The letters patent expired on 05/03/1994: 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: 06/28/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

LUBRIZOL CORP

See this company's full portfolio

Inventors

D. K. (pessoa física)

H. T. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1988

RPI 923

Notificação para pagamento de retribuição

#13.1

05/10/1988

RPI 916

Deferimento

#9.1

11/10/1987

RPI 890

Exigência - art. 36 da LPI

#6.1

01/27/1987

RPI 849

Exigência - art. 36 da LPI

#6.1

08/09/1983

RPI 668

Exigência - art. 36 da LPI

#6.1

10/26/1982

RPI 627

Solicitação de exame técnico

#4.1

01/12/1982

RPI 586

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

Patent monitoring

Track this patent in real time.

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