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Official data from INPI

COMPOSICAO COMPREENDENDO UM COMPOSTO LIQUIDO VISCO-ELASTICO POLIFUNCIONAL E PROCESSO PARA SUA PRODUCAO

ConcedidaInvention Patent
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Application data

Number

PI8103548

Type

Invention Patent

Filing

06/04/1981

Publication

03/02/1982
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Progress at the INPI

  1. Filing06/04/81
  2. Publication03/02/82
  3. Examination03/27/84
  4. Allowance09/30/86
  5. Grant06/30/87
  6. Expired10/08/96

The letters patent expired on 10/08/1996: 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: 06/30/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Interox Chemicals Limited

GB

Inventors

C. C. (pessoa física)

Technical data

IPC Classification

C08G 63/00C08G 63/08C08L 87/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/30/1987

RPI 871

Deferimento

#9.1

09/30/1986

RPI 832

Exigência - art. 36 da LPI

#6.1

11/19/1985

RPI 787

Exigência - art. 36 da LPI

#6.1

01/22/1985

RPI 744

Solicitação de exame técnico

#4.1

03/27/1984

RPI 701

Publicação do pedido de patente

#3.1

03/02/1982

RPI 593

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era C09D 3/74.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

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