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Official data from INPI

COMPOSICAO LUBRIFICANTE,CONCENTRADO DE ADITIVO,PROCESSO PARA PREPARACAO DE COMPOSICAO SULFURIZADA,PROCESSO PARA PREPARACAO DE COMPOSICAO DE ISOBUTILENO SULFURIZADO,COMPOSICAO SULFURIZADA,E COMPOSICAO DE ISOBUTILENO SULFURIZADA 5-DILDRO-TETRAZOL-(1,5-A)-QUINA ZOLIN-5 ONA

Em AnáliseInvention Patent

Application data

Number

PI7805820

Type

Invention Patent

Filing

09/06/1978

Publication

-

Progress at the INPI

  1. Filing09/06/78
  2. Publication
  3. Examination
  4. Allowance07/12/83
  5. Grant12/27/83
  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: 04/02/1985. 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).

Cessão de direito de exploração

#22.1

04/02/1985

RPI 754

16.3

03/20/1984

RPI 700

Concessão da patente

#16.1

12/27/1983

RPI 688

Notificação para pagamento de retribuição

#13.1

11/08/1983

RPI 681

Deferimento

#9.1

07/12/1983

RPI 664

Exigência - art. 36 da LPI

#6.1

10/26/1982

RPI 627

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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