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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI7905756

Type

Invention Patent

Filing

09/05/1979

Publication

-

Progress at the INPI

  1. Filing09/05/79
  2. Publication
  3. Examination10/20/81
  4. Allowance08/23/83
  5. Grant03/27/84
  6. Expired11/14/95

The letters patent expired on 11/14/1995: 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: 10/17/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Enichem Fibre S.p.A.

IT

Inventors

C. F. (pessoa física)

S. A. (pessoa física)

T. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

10/17/1989

RPI 991

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

12/13/1983

RPI 686

Deferimento

#9.1

08/23/1983

RPI 670

Exigência - art. 36 da LPI

#6.1

03/01/1983

RPI 645

Solicitação de exame técnico

#4.1

10/20/1981

RPI 574

Carta-patente expirada

#21.1

11/14/1995

RPI 1302

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