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Official data from INPI

MATERIAL REFRATÁRIO E MÉTODO PARA A PROTEÇÃO DE UM MATERIAL DE REVESTIMENTO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9103497

Type

Invention Patent

Filing

08/15/1991

Publication

05/12/1992

Progress at the INPI

  1. Filing08/15/91
  2. Publication05/12/92
  3. Examination07/05/94
  4. Allowance08/25/98
  5. Grant02/23/99
  6. Expired06/04/13

The letters patent expired on 06/04/2013: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 06/04/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Minteq International Inc

US

Quigley Company, Inc

US

Specialty Minerals (Michigan) Inc.

US

Inventors

K. I. (pessoa física)

JP

T. T. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

216179/90 · 08/16/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinte em 15/08/2011

06/04/2013

RPI 2213

Transferência deferida

#25.1

Transferido de: Minteq International Inc.

12/27/2005

RPI 1825

Concessão da patente

#16.1

02/23/1999

RPI 1468

Republicação - classificação IPC

#15.11

Alterada de Int.Cl.6 B22D 41/02

08/25/1998

RPI 1444

Deferimento

#9.1

08/25/1998

RPI 1444

14.4

12/12/1995

RPI 1306

14.7

12/12/1995

RPI 1306

14.1

12/05/1995

RPI 1305

Solicitação de exame técnico

#4.1

07/05/1994

RPI 1231

Publicação do pedido de patente

#3.1

05/12/1992

RPI 1119

Pedido de patente depositado

#2.1

09/17/1991

RPI 1085

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