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Official data from INPI

APERFEICOAMENTO EM RESINA DE MOLDAGEM ESTABILIZADA TERMICAMENTE

ConcedidaInvention Patent

Application data

Number

PI7603353

Type

Invention Patent

Filing

06/09/1975

Publication

-

Progress at the INPI

  1. Filing06/09/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant08/31/82
  6. Expired08/03/93

The letters patent expired on 08/03/1993: 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: 08/31/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CELANESE CORP

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Inventors

G. J. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/31/1982

RPI 619

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

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