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Official data from INPI

FILTRO DE ESPUMA CERÂMICO E PROCESSO PARA A SUA FABRICAÇÃO

Arquivada/ExtintaInvention PatentPCT · CH1988000062

Application data

Number

PI8806991

Type

Invention Patent

Filing

03/21/1988

Publication

10/31/1989

PCT

CH1988000062

Progress at the INPI

  1. Filing03/21/88
  2. Publication10/31/89
  3. Examination12/04/90
  4. Allowance12/26/95
  5. Grant12/31/96
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 10/31/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Schweizerische Aluminium Ag

CH

S. C. (pessoa física)

US

Inventors

J. D. (pessoa física)

US

J. B. (pessoa física)

US

L. A. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

029.184 · 03/23/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação de entrada na fase nacional - PCT

#1.3

10/31/1989

RPI 993

Carta-patente expirada

#21.1

Patente extinta em 21/03/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

12/31/1996

RPI 1361

14.1

11/12/1996

RPI 1354

14.7

11/05/1996

RPI 1353

14.4

10/29/1996

RPI 1352

Deferimento

#9.1

12/26/1995

RPI 1308

Conhecimento de parecer técnico

#7.1

03/28/1995

RPI 1269

Solicitação de exame técnico

#4.1

12/04/1990

RPI 1044

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