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Official data from INPI

PROCESSO PARA PREPARAR UM PIGMENTO DE DIÓXIDO DE TITÂNIO RUTILO

Arquivada/ExtintaInvention PatentPCT · US1989002043

Application data

Number

PI8907446

Type

Invention Patent

Filing

05/11/1989

Publication

05/21/1991

PCT

US1989002043

Progress at the INPI

  1. Filing05/11/89
  2. Publication05/21/91
  3. Examination09/10/91
  4. Allowance05/20/97
  5. Grant01/21/98
  6. Expired12/26/12

The letters patent expired on 12/26/2012: 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: 12/26/2012. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

K. C. (pessoa física)

US

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Inventors

E. A. (pessoa física)

US

J. M. (pessoa física)

US

R. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

197.212 · 05/23/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 11/05/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

01/21/1998

RPI 1413

Deferimento

#9.1

05/20/1997

RPI 1381

Exigência - art. 36 da LPI

#6.1

08/27/1996

RPI 1343

Solicitação de exame técnico

#4.1

09/10/1991

RPI 1084

Notificação de entrada na fase nacional - PCT

#1.3

05/21/1991

RPI 1068

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