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Official data from INPI

ANIDRIDO DIOXIDIFTÁLICO E PROCESSO PARA SUA PREPARAÇÃO

Em AnáliseInvention Patent

Application data

Number

PI9002177

Type

Invention Patent

Filing

05/10/1990

Publication

08/13/1991

Progress at the INPI

  1. Filing05/10/90
  2. Publication08/13/91
  3. Examination05/04/93
  4. Allowance
  5. Grant
  6. In force

Published on 08/13/1991, 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: 02/13/1996. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

O. C. (pessoa física)

US

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Inventors

J. S. (pessoa física)

W. S. (pessoa física)

Technical data

IPC Classification

Priority claims

US

352.070 · 05/15/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Retificação

#15.3

02/13/1996

RPI 1315

Solicitação de exame técnico

#4.1

05/04/1993

RPI 1170

Publicação do pedido de patente

#3.1

08/13/1991

RPI 1080

Pedido de patente depositado

#2.1

09/25/1990

RPI 1034

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