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Official data from INPI

PROCESSO PARA PREPARAR UM CATALISADOR PARA A POLIMERIZAÇÃO CONSISTENTE DO ETILENO; CATALISADOR DE POLIMERIZAÇÃO DO ETILENO; E PROCESSO PARA POLIMERIZAR CATALITICAMENTE O ETILENO

ConcedidaInvention Patent

Application data

Number

PI7706288

Type

Invention Patent

Filing

09/21/1977

Publication

-

Progress at the INPI

  1. Filing09/21/77
  2. Publication
  3. Examination
  4. Allowance08/30/83
  5. Grant03/27/84
  6. Expired07/06/93

The letters patent expired on 07/06/1993: 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: 03/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. C. (pessoa física)

US

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Inventors

F. K. (pessoa física)

US

I. L. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

725.542 · 09/22/1976

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

12/20/1983

RPI 687

Deferimento

#9.1

08/30/1983

RPI 671

Exigência - art. 36 da LPI

#6.1

02/01/1983

RPI 641

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

20.4

10/08/1991

RPI 1088

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