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Official data from INPI

SISTEMA DE ALIMENTAÇÃO DE PÓ

Arquivada/ExtintaInvention Patent

Application data

Number

PI8905353

Type

Invention Patent

Filing

10/20/1989

Publication

05/22/1990

Progress at the INPI

  1. Filing10/20/89
  2. Publication05/22/90
  3. Examination06/09/92
  4. Allowance01/06/98
  5. Grant08/25/98
  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

Sulzer Metco (US) Inc.

US

T. C. (pessoa física)

US

See this company's full portfolio

Inventors

M. S. (pessoa física)

US

R. G. (pessoa física)

US

Technical data

Priority claims

US

260,625 · 10/21/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 20/10/2009

12/26/2012

RPI 2190

Transferência deferida

#25.1

Transferido de: The Perkin-Elmer Corporation

11/20/2001

RPI 1611

Concessão da patente

#16.1

08/25/1998

RPI 1444

Deferimento

#9.1

01/06/1998

RPI 1411

Exigência - art. 36 da LPI

#6.1

08/13/1996

RPI 1341

Solicitação de exame técnico

#4.1

06/09/1992

RPI 1123

Publicação do pedido de patente

#3.1

05/22/1990

RPI 1019

Pedido de patente depositado

#2.1

04/03/1990

RPI 1012

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