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Official data from INPI

PROCESSO PARA PREPARAR ESTERES DE ALQUILPERFLUOR-OMEGA-FLUORFOR MILA E COMPOSTOS ASSIM OBTIDOS

ConcedidaInvention Patent

Application data

Number

PI7802432

Type

Invention Patent

Filing

04/20/1977

Publication

-

Progress at the INPI

  1. Filing04/20/77
  2. Publication
  3. Examination
  4. Allowance03/01/83
  5. Grant09/27/83
  6. Expired07/06/93

The letters patent expired on 07/06/1993: 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: 09/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT

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Inventors

E. D. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/27/1983

RPI 675

Notificação para pagamento de retribuição

#13.1

06/21/1983

RPI 661

Deferimento

#9.1

03/01/1983

RPI 645

Exigência - art. 36 da LPI

#6.1

06/29/1982

RPI 610

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

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