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Official data from INPI

CATALISADOR PARA REGULAÇÃO DA DISTRIBUIÇÃO DE PESO MOLECULAR DE POLÍMEROS DE ETILENO

ArquivadaInvention Patent

Application data

Number

PI9100473

Type

Invention Patent

Filing

02/05/1991

Publication

09/22/1992

Progress at the INPI

  1. Filing02/05/91
  2. Publication09/22/92
  3. Abandoned
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: examination was not requested within the 36 months following the 02/05/1991 filing, the deadline set by art. 33 of the Brazilian IP Act. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 11/08/1994. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Union Carbide Chemicals and Plastics Company Inc.

US

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Inventors

F. K. (pessoa física)

US

S. K. (pessoa física)

US

Technical data

IPC Classification

Abstract

Um catalisador à base de vanádio é tratado com certos compostos de alcóxido de alquilalumínio como meio de estreitar e regular eficazmente a distribuição de peso molecular dos polímeros produzidos com o catalisador.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 33 da LPI

#11.1

11/08/1994

RPI 1249

Publicação do pedido de patente

#3.1

09/22/1992

RPI 1138

Pedido de patente depositado

#2.1

08/20/1991

RPI 1081

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