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Official data from INPI

GRÃO FUNDIDO DE ESPINÉLIO-ZIRCÔNIA, MISTURA REFRATÁRIA E PEÇA REFRATÁRIA

ArquivadaInvention Patent

Application data

Number

PI9501762

Type

Invention Patent

Filing

04/24/1995

Publication

11/21/1995

Progress at the INPI

  1. Filing04/24/95
  2. Publication11/21/95
  3. Examination
  4. Allowance01/29/02
  5. Abandoned
  6. In force

The application was allowed on 01/29/2002 but abandoned for failure to pay the grant fee (art. 38 of the Brazilian IP Act). The letters patent were never issued.

Talk to a specialist

Latest action published by the INPI: 12/31/2002. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Harbison-Walker Refractories Company

US

Indresco Inc.

US

See this company's full portfolio

Inventors

R. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

232379 · 04/25/1994

Abstract

Mistura refratária contendo magnesita com um teor de MgO de pelo menos cerca de 95% em peso e um grão fundido de espinélio-zircônia contendo 1 a 40% em peso de zircônia e peças refratárias, particularmente tijolos, produzidas a partir da mesma.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 38 §2° da LPI

#11.4

12/31/2002

RPI 1669

Deferimento

#9.1

01/29/2002

RPI 1621

Alteração de nome deferida

#25.4

Alterado de: Indresco Inc

08/25/1998

RPI 1444

Publicação do pedido de patente

#3.1

11/21/1995

RPI 1303

Pedido de patente depositado

#2.1

06/06/1995

RPI 1279

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