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Official data from INPI

PROCESSO PARA PREPARAR COMPOSICOESPOLIMERICAS ESTABILIZADAS COM POLIAMINAS E PROCESSO DE OBTENCAO DE POLIAMINAS

Em AnáliseInvention Patent
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Application data

Number

PI7601663

Type

Invention Patent

Filing

03/21/1975

Publication

-
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Progress at the INPI

  1. Filing03/21/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant12/29/81
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 06/28/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MONTEFIBRE SPA

Inventors

C. G. (pessoa física)

Technical data

IPC Classification

C08G 69/26C08G 69/36C08G 73/00C08G 73/02C08G 73/06C08K 5/34C08K 5/3412C08K 5/3435C08L 101/00C08L 21/00C08L 23/00C08L 23/02C08L 23/12C08L 23/18C08L 7/00C08L 77/00C08L 87/00D01F 6/46

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

06/28/1988

RPI 923

Pedido de licença compulsória

#20.1

10/13/1987

RPI 886

Pedido de licença compulsória

#20.1

10/06/1987

RPI 885

Concessão da patente

#16.1

12/29/1981

RPI 584

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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