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Official data from INPI

PROCESSO PARA PREPARAR ARTIGOS CERÂMICOS NÃO BRANCOS E COMPOSIÇÃO DE PASTA

Arquivada/ExtintaInvention PatentPCT · US1989002414

Application data

Number

PI8907483

Type

Invention Patent

Filing

06/02/1989

Publication

04/02/1991

PCT

US1989002414

Progress at the INPI

  1. Filing06/02/89
  2. Publication04/02/91
  3. Examination08/27/91
  4. Allowance11/09/99
  5. Grant05/30/00
  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

The Dow Chemical Company

US

See this company's full portfolio

Inventors

A. C. (pessoa física)

US

B. K. (pessoa física)

US

Technical data

Priority claims

US

202,626 · 06/06/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 30/05/2010

12/26/2012

RPI 2190

Concessão da patente

#16.1

05/30/2000

RPI 1534

6.8

Ref. RPI 1493 de 17/08/99.

11/09/1999

RPI 1505

Deferimento

#9.1

11/09/1999

RPI 1505

Exigência - art. 36 da LPI

#6.1

08/17/1999

RPI 1493

Exigência - art. 36 da LPI

#6.1

08/18/1998

RPI 1443

Exigência - art. 36 da LPI

#6.1

10/28/1997

RPI 1404

Exigência - art. 36 da LPI

#6.1

11/19/1996

RPI 1355

Solicitação de exame técnico

#4.1

08/27/1991

RPI 1082

Notificação de entrada na fase nacional - PCT

#1.3

04/02/1991

RPI 1061

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