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Official data from INPI

COMPOSICOES DE LIBERACAO CONTROLADA,A PARTIR DE ETERES CELULOSICOS

Em AnáliseInvention Patent

Application data

Number

PI8401096

Type

Invention Patent

Filing

03/03/1983

Publication

10/16/1984

Progress at the INPI

  1. Filing03/03/83
  2. Publication10/16/84
  3. Abandoned10/21/86
  4. Allowance
  5. Grant
  6. In force

The applicant withdrew the application. The case ended without a patent.

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Latest action published by the INPI: 05/16/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DOW CHEMICAL CO [US]

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Inventors

A. A. (pessoa física)

Z. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

10.1

05/16/1989

RPI 969

Exigência - art. 36 da LPI

#6.1

01/31/1989

RPI 954

Solicitação de exame técnico

#4.1

10/21/1986

RPI 835

Publicação do pedido de patente

#3.1

10/16/1984

RPI 730

Pedido de patente depositado

#2.1

05/15/1984

RPI 708

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