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Official data from INPI

DISPOSITIVO DE CAPTAÇÃO DE PÓ COM VIDA ÚTIL PROLONGADA

Arquivada/ExtintaInvention Patent

Application data

Number

PI9104840

Type

Invention Patent

Filing

11/06/1991

Publication

06/23/1992

Progress at the INPI

  1. Filing11/06/91
  2. Publication06/23/92
  3. Examination07/19/94
  4. Allowance04/25/95
  5. Grant10/31/95
  6. Expired06/29/10

The letters patent expired on 06/29/2010: 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: 06/29/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Sulzer Metco (US) Inc.

US

T. C. (pessoa física)

US

See this company's full portfolio

Inventors

A. R. (pessoa física)

US

J. S. (pessoa física)

US

M. S. (pessoa física)

US

R. G. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

07/610,484 · 11/07/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 06/11/2006

06/29/2010

RPI 2060

Transferência deferida

#25.1

Transferido de: The Perkin-Elmer Corporation

08/28/2001

RPI 1599

Concessão da patente

#16.1

10/31/1995

RPI 1300

Deferimento

#9.1

04/25/1995

RPI 1273

Solicitação de exame técnico

#4.1

07/19/1994

RPI 1233

Publicação do pedido de patente

#3.1

06/23/1992

RPI 1125

Pedido de patente depositado

#2.1

12/10/1991

RPI 1097

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