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Official data from INPI

VERNIZES LUBRIFICANTES A BASE DE FLUORETO DE GRAFITE E PROCESSOS PARA A SUA PREPARACAO E SUA APLICACAO

ConcedidaInvention Patent

Application data

Number

PI8007365

Type

Invention Patent

Filing

11/13/1979

Publication

-

Progress at the INPI

  1. Filing11/13/79
  2. Publication
  3. Examination
  4. Allowance09/01/87
  5. Grant04/26/88
  6. Expired12/26/95

The letters patent expired on 12/26/1995: 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: 04/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

P C U K - Produits Chimiques Ugine Kuhlmann

FR

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Inventors

R. M. (pessoa física)

S. E. (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

12/29/1987

RPI 897

Deferimento

#9.1

09/01/1987

RPI 880

Conhecimento de parecer técnico

#7.1

09/27/1983

RPI 675

6.2

11/30/1982

RPI 632

Carta-patente expirada

#21.1

12/26/1995

RPI 1308

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