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Official data from INPI

SISTEMA CATALITICO ZIEGLER E PROCESSO PARA A HOMO-OU COPOLIMERIZACAO DE ALFA-OLEFINAS

ConcedidaInvention Patent

Application data

Number

PI7806481

Type

Invention Patent

Filing

09/30/1977

Publication

-

Progress at the INPI

  1. Filing09/30/77
  2. Publication
  3. Examination
  4. Allowance01/03/84
  5. Grant06/26/84
  6. Expired05/03/94

The letters patent expired on 05/03/1994: 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: 06/26/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

EUTECO SPA

Inventors

F. M. (pessoa física)

I. R. (pessoa física)

L. F. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/26/1984

RPI 714

Notificação para pagamento de retribuição

#13.1

04/24/1984

RPI 705

Deferimento

#9.1

01/03/1984

RPI 689

Exigência - art. 36 da LPI

#6.1

11/09/1982

RPI 629

6.2

10/27/1981

RPI 575

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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