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Official data from INPI

APERFEICOAMENTO EM PROCESSO PARA PRODUZIR UM HOMOPOLIMERO OU UM COPOLIMERO DE PROPILENO

Em AnáliseInvention Patent

Application data

Number

PI7801119

Type

Invention Patent

Filing

02/25/1977

Publication

-

Progress at the INPI

  1. Filing02/25/77
  2. Publication
  3. Examination
  4. Allowance10/26/82
  5. Grant10/01/85
  6. Expired07/20/93

The letters patent expired on 07/20/1993: 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: 06/24/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SUMITOMO CHEMICAL CO

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Inventors

K. M. (pessoa física)

M. K. (pessoa física)

S. A. (pessoa física)

S. T. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

06/24/1986

RPI 818

Concessão da patente

#16.1

10/01/1985

RPI 780

110

06/04/1985

RPI 763

Recurso

#12.1

02/22/1983

RPI 644

Republicação - classificação IPC

#15.11

01/11/1983

RPI 638

Deferimento

#9.1

10/26/1982

RPI 627

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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