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Official data from INPI

COMPOSICAO SOLUBILIZANTE CARBOXILICO TENSO ATIVA SISTEMA AQUOSO FLUIDO FUNCIONAL A BASE DE AGUA E PROCESSO PARA PREPARACAO DE SISTEMAS AQUOSOS

ConcedidaInvention Patent

Application data

Number

PI7906133

Type

Invention Patent

Filing

09/27/1978

Publication

-

Progress at the INPI

  1. Filing09/27/78
  2. Publication
  3. Examination08/03/82
  4. Allowance10/06/87
  5. Grant04/26/88
  6. Expired04/25/95

The letters patent expired on 04/25/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 04/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

LUBRIZOL CORP

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Inventors

F. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/26/1988

RPI 914

Notificação para pagamento de retribuição

#13.1

02/09/1988

RPI 903

Deferimento

#9.1

10/06/1987

RPI 885

Conhecimento de parecer técnico

#7.1

11/08/1983

RPI 681

Solicitação de exame técnico

#4.1

08/03/1982

RPI 615

Carta-patente expirada

#21.1

04/25/1995

RPI 1273

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