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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE UM PRODUTO DE CAULIM DE ALTA OPACIDADE E PRODUTO DE ARGILA DE CAULIM

Arquivada/ExtintaInvention Patent

Application data

Number

PI9101878

Type

Invention Patent

Filing

05/08/1991

Publication

12/17/1991

Progress at the INPI

  1. Filing05/08/91
  2. Publication12/17/91
  3. Examination03/29/94
  4. Allowance12/07/99
  5. Grant07/11/00
  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

Georgia Kaolin Company, Inc.

US

See this company's full portfolio

Inventors

B. M. (pessoa física)

US

K. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

521.204 · 05/09/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 08/05/2011

06/04/2013

RPI 2213

Concessão da patente

#16.1

07/11/2000

RPI 1540

Deferimento

#9.1

12/07/1999

RPI 1509

Exigência - art. 36 da LPI

#6.1

01/26/1999

RPI 1464

Solicitação de exame técnico

#4.1

03/29/1994

RPI 1217

Publicação do pedido de patente

#3.1

12/17/1991

RPI 1098

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