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Official data from INPI

DERIVADO DE ÉTER DE CELULOSE SOLÚVEL EM ÁGUA, E COMPOSIÇÃO PARA CONSTRUÇÃO

PublicadaInvention Patent

Application data

Number

PI8802986

Type

Invention Patent

Filing

06/17/1988

Publication

01/10/1989

Progress at the INPI

  1. Filing06/17/88
  2. Publication01/10/89
  3. Examination02/19/91
  4. Allowance
  5. Grant
  6. In force

Published on 01/10/1989, the application is awaiting technical examination at the INPI, which decides whether the invention meets the patentability requirements.

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Latest action published by the INPI: 01/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Aqualon Company

US

Inventors

H. T. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

US

063.568 · 06/17/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

01/10/1989

RPI 951

Pedido de patente depositado

#2.1

11/08/1988

RPI 942

Retificação

#15.3

02/16/1994

RPI 1211

Solicitação de exame técnico

#4.1

02/19/1991

RPI 1055

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