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Official data from INPI

METODO DE PREPARACAO DE CATALIZADOR DE TRICLORETO DE TITANIO REFORMADO PARA POLIMERIZACAO DE ALFAOLEFINAS E PROCESSO DE COPOLIMERIZACAO DE ALFA-OLEFINAS

ConcedidaInvention Patent

Application data

Number

PI7608393

Type

Invention Patent

Filing

12/16/1975

Publication

-

Progress at the INPI

  1. Filing12/16/75
  2. Publication
  3. Examination
  4. Allowance02/28/84
  5. Grant09/25/84
  6. Expired07/27/93

The letters patent expired on 07/27/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 09/25/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

STAUFFER CHEMICAL CO

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Inventors

K. A. (pessoa física)

T. Y. (pessoa física)

T. S. (pessoa física)

Y. K. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/25/1984

RPI 727

Notificação para pagamento de retribuição

#13.1

06/12/1984

RPI 712

Deferimento

#9.1

02/28/1984

RPI 697

Exigência - art. 36 da LPI

#6.1

05/18/1982

RPI 604

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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