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Official data from INPI

PROCESSO E DISPOSITIVO PARA A EXTRUSAO E SOPRO CONTINUO DE FILMES PLASTICOS

ConcedidaInvention Patent

Application data

Number

PI7901963

Type

Invention Patent

Filing

01/19/1979

Publication

-

Progress at the INPI

  1. Filing01/19/79
  2. Publication
  3. Examination
  4. Allowance08/10/82
  5. Grant03/29/83
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 03/29/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

P. T. (pessoa física)

Inventors

T. G. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/29/1983

RPI 649

Exigência - art. 36 da LPI

#6.1

12/07/1982

RPI 633

Deferimento

#9.1

08/10/1982

RPI 616

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

Pedido de licença compulsória

#20.1

08/07/1990

RPI 1027

14.3

03/13/1990

RPI 1009

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