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Official data from INPI

COPOLIMEROS DE ETILENO CAPAZES DE SEREM TRANSFORMADOS EM FILMES E PROCESSO DE PRODUCAO DESSES COPOLIMEROS

ConcedidaInvention Patent

Application data

Number

PI8001680

Type

Invention Patent

Filing

03/23/1979

Publication

-

Progress at the INPI

  1. Filing03/23/79
  2. Publication
  3. Examination
  4. Allowance06/26/84
  5. Grant11/27/84
  6. Expired05/16/95

The letters patent expired on 05/16/1995: 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: 11/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. C. (pessoa física)

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Inventors

M. J. (pessoa física)

R. F. (pessoa física)

S. A. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/27/1984

RPI 736

Deferimento

#9.1

06/26/1984

RPI 714

Exigência - art. 36 da LPI

#6.1

09/27/1983

RPI 675

6.2

01/11/1983

RPI 638

Carta-patente expirada

#21.1

05/16/1995

RPI 1276

Pedido de licença compulsória

#20.1

04/21/1992

RPI 1116

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