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Official data from INPI

MATERIAL AMORTECEDOR DE SOM; MATERIAL FLEXÍVEL DE BARREIRA; PROCESSO PARA PRODUZIR COMPOSIÇÃO DE ELASTÔMERO DE POLIURETANO COM LIGAÇÕES CRUZADAS

ArquivadaInvention Patent

Application data

Number

PI8203425

Type

Invention Patent

Filing

06/11/1982

Publication

06/07/1983

Progress at the INPI

  1. Filing06/11/82
  2. Publication06/07/83
  3. Abandoned10/25/83
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.

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Latest action published by the INPI: 06/25/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W.R. Grace & Co

US

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Inventors

G. F. (pessoa física)

US

L. W. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

287.353 · 07/27/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 36 §1° da LPI

#11.2

06/25/1985

RPI 766

Exigência - art. 36 da LPI

#6.1

12/18/1984

RPI 739

Solicitação de exame técnico

#4.1

10/25/1983

RPI 679

Publicação do pedido de patente

#3.1

06/07/1983

RPI 659

Pedido de patente depositado

#2.1

08/03/1982

RPI 615

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