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Official data from INPI

GRÃO ABRASIVO DE ALUMINA DE SOL-GEL, PROCESSO PARA SUA PRODUÇÃO E ARTIGO

ArquivadaInvention Patent

Application data

Number

PI9300667

Type

Invention Patent

Filing

02/25/1993

Publication

08/31/1993

Progress at the INPI

  1. Filing02/25/93
  2. Publication08/31/93
  3. Abandoned
  4. Allowance
  5. Grant
  6. In force

The application was abandoned at the INPI. The case ended without a patent and the technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 07/13/1999. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Norton Company

US

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Inventors

J. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

840968 · 02/26/1992

Abstract

A presente invenção refere-se a um grão abrasivo de alumina de sol-gel com qualidades abrasivas aperfeiçoadas, a um processo para preparação do dito grão e a um artigo contendo o mesmo.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

11.30

Prazo encerrado durante a vigência da Lei 5772/71

07/13/1999

RPI 1488

Publicação do pedido de patente

#3.1

08/31/1993

RPI 1187

Pedido de patente depositado

#2.1

04/13/1993

RPI 1167

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