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Official data from INPI

PROCESSO DE POLIMERIZACAO MASSICA PARA A PRODUCAO DE UM HOMOPOLIMERO OU DE UM COPOLIMERO DE PROPILENO

ConcedidaInvention Patent

Application data

Number

PI7500312

Type

Invention Patent

Filing

01/16/1974

Publication

-

Progress at the INPI

  1. Filing01/16/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant04/27/82
  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.

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Latest action published by the INPI: 04/27/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SUMITOMO CHEMICAL CO

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Inventors

A. S. (pessoa física)

K. M. (pessoa física)

M. A. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/27/1982

RPI 601

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

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