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Official data from INPI

PROCESSO PARA PREPARACAO DE ADITIVOS DETERGENTES-DISPERSANTES METALICOS DE ALTA ALCALINIDADE,PRINCIPALMENTE PARA OLEOS LUBRIFICANTE,E PRODUTO OBTIDO

ConcedidaInvention Patent

Application data

Number

PI7903979

Type

Invention Patent

Filing

06/26/1978

Publication

-

Progress at the INPI

  1. Filing06/26/78
  2. Publication
  3. Examination
  4. Allowance11/13/84
  5. Grant05/28/85
  6. Expired04/04/95

The letters patent expired on 04/04/1995: 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: 05/28/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

OROGIL

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Inventors

C. J. (pessoa física)

D. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/28/1985

RPI 762

Notificação para pagamento de retribuição

#13.1

03/26/1985

RPI 753

Deferimento

#9.1

11/13/1984

RPI 734

Exigência - art. 36 da LPI

#6.1

01/17/1984

RPI 691

6.2

04/06/1982

RPI 598

Carta-patente expirada

#21.1

04/04/1995

RPI 1270

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