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Official data from INPI

PROCESSO PARA CONCENTRAÇÃO DE UMA PASTA AQUOSA DE ARGILA

Em AnáliseInvention PatentPCT · US1986001413

Application data

Number

PI8606787

Type

Invention Patent

Filing

07/07/1986

Publication

10/13/1987

PCT

US1986001413

Progress at the INPI

  1. Filing07/07/86
  2. Publication10/13/87
  3. Examination03/01/88
  4. Allowance03/24/92
  5. Grant11/24/92
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 03/01/1988. 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

J. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

761.643 · 08/01/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

03/01/1988

RPI 906

Notificação de entrada na fase nacional - PCT

#1.3

10/13/1987

RPI 886

Carta-patente expirada

#21.1

Patente extinta em 07/07/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

11/24/1992

RPI 1147

Notificação para pagamento de retribuição

#13.1

09/01/1992

RPI 1135

Deferimento

#9.1

03/24/1992

RPI 1112

Exigência - art. 36 da LPI

#6.1

05/14/1991

RPI 1067

Conhecimento de parecer técnico

#7.1

10/30/1990

RPI 1039

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