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Official data from INPI

DISTRIBUIDOR DE FLUIDO DE PLACA PERFURADA, E VASO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9304000

Type

Invention Patent

Filing

10/01/1993

Publication

04/05/1994

Progress at the INPI

  1. Filing10/01/93
  2. Publication04/05/94
  3. Examination01/16/96
  4. Allowance09/30/97
  5. Grant09/29/98
  6. Expired01/21/15

The letters patent expired on 01/21/2015: 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: 01/21/2015. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Praxair Technology, Inc.

US

See this company's full portfolio

Inventors

J. N. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

955.787 · 10/02/1992

Abstract

Trata-se, de maneira geral, em um aparelho para prover um fluxo de fluido uniforme em vasos contendo materiais de compactação ou particulados e, particularmente, de um aparelho para prover um fluxo de gás uniforme em vasos adsorventes de troca de pressão.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 01/10/2013

01/21/2015

RPI 2298

Concessão da patente

#16.1

09/29/1998

RPI 1449

Deferimento

#9.1

09/30/1997

RPI 1400

Solicitação de exame técnico

#4.1

01/16/1996

RPI 1311

Publicação do pedido de patente

#3.1

04/05/1994

RPI 1218

Pedido de patente depositado

#2.1

11/16/1993

RPI 1198

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