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Official data from INPI

PROCESSO DE PRODUZIR UM PIGMENTO OPACIFICANTE DE CAOLIM

Arquivada/ExtintaInvention PatentPCT · US1990002157

Application data

Number

PI9006747

Type

Invention Patent

Filing

04/20/1990

Publication

08/06/1991

PCT

US1990002157

Progress at the INPI

  1. Filing04/20/90
  2. Publication08/06/91
  3. Examination04/06/93
  4. Allowance06/29/99
  5. Grant12/28/99
  6. Expired01/08/13

The letters patent expired on 01/08/2013: 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: 01/08/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Thiele Kaolin Company

US

Inventors

J. C. (pessoa física)

US

J. S. (pessoa física)

US

T. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

341.723 · 04/21/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 20/04/2010

01/08/2013

RPI 2192

Concessão da patente

#16.1

12/28/1999

RPI 1512

Deferimento

#9.1

06/29/1999

RPI 1486

Exigência - art. 36 da LPI

#6.1

01/26/1999

RPI 1464

Conhecimento de parecer técnico

#7.1

06/23/1998

RPI 1435

Solicitação de exame técnico

#4.1

04/06/1993

RPI 1166

Notificação de entrada na fase nacional - PCT

#1.3

08/06/1991

RPI 1079

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