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Official data from INPI

PROCESSO PARA PREPARAR COMPOSICOES ORGANICAS CONTENDO NITROGENIO;COMPOSICOES CONTENDO NITROGENIO;LUBRIFICANTE OU COMBUSTIVEL NORMALMENTE LIQUIDO;E CONCENTRADO ADITIVO

ConcedidaInvention Patent

Application data

Number

PI7705183

Type

Invention Patent

Filing

08/13/1976

Publication

-

Progress at the INPI

  1. Filing08/13/76
  2. Publication
  3. Examination
  4. Allowance03/29/83
  5. Grant09/27/83
  6. Expired07/13/93

The letters patent expired on 07/13/1993: 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: 09/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

LUBRIZOL CORP

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Inventors

D. K. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/27/1983

RPI 675

Notificação para pagamento de retribuição

#13.1

08/02/1983

RPI 667

Deferimento

#9.1

03/29/1983

RPI 649

Carta-patente expirada

#21.1

07/13/1993

RPI 1180

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