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Official data from INPI

PROCESSO PARA PREPARAR UMA COMPOSICAO CONTENDO NITROGENIO E SOLUVEL EM OLEO COMPOSICOES PREPARA DAS PELO PROCESSO CONCENTRADO DE ADITIVO COMPOSICAO LUBRIFICANTE E COMPOSICAO COMBUSTIVEL

ConcedidaInvention Patent

Application data

Number

PI7501234

Type

Invention Patent

Filing

01/13/1975

Publication

-

Progress at the INPI

  1. Filing01/13/75
  2. Publication
  3. Examination
  4. Allowance11/16/82
  5. Grant05/31/83
  6. Expired08/03/93

The letters patent expired on 08/03/1993: 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: 05/31/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

LUBRIZOL CORP

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Inventors

B. C. (pessoa física)

C. J. (pessoa física)

P. J. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1983

RPI 658

Notificação para pagamento de retribuição

#13.1

03/22/1983

RPI 648

Deferimento

#9.1

11/16/1982

RPI 630

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

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