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Official data from INPI

COMPONENTES CATALITICOS UTILIZAVEIS PARA POLIMERIZAR OLEFINAS,PROCESSO PARA SUA PREPARACAO,E CATALIZADORES E PROCESSO PARA POLIMERIZACAO OU COPOLIMERIZACAO DE OLEFINAS

Em AnáliseInvention Patent

Application data

Number

PI7601857

Type

Invention Patent

Filing

03/28/1975

Publication

-

Progress at the INPI

  1. Filing03/28/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant07/27/82
  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.

Talk to a specialist

Latest action published by the INPI: 04/04/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MONTEDISON SPA

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Inventors

A. E. (pessoa física)

G. U. (pessoa física)

P. S. (pessoa física)

P. F. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

18.3

04/04/1989

RPI 963

22.3

06/16/1987

RPI 869

18.1

10/29/1986

RPI 836

Concessão da patente

#16.1

07/27/1982

RPI 614

Notificação para pagamento de retribuição

#13.1

11/17/1981

RPI 578

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

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