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Official data from INPI

APARELHAGEM PARA SEPARAÇÃO DE AR; E PROCESSO PARA SEPARAR UMA MISTURA

Arquivada/ExtintaInvention Patent

Application data

Number

PI9103112

Type

Invention Patent

Filing

07/19/1991

Publication

04/28/1992

Progress at the INPI

  1. Filing07/19/91
  2. Publication04/28/92
  3. Examination10/05/93
  4. Allowance03/19/96
  5. Grant02/04/97
  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

Praxair Technology, Inc.

US

See this company's full portfolio

Inventors

K. M. (pessoa física)

US

M. L. (pessoa física)

US

R. V. (pessoa física)

US

R. Z. (pessoa física)

US

S. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

555.039 · 07/20/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 19/07/2006

06/29/2010

RPI 2060

Concessão da patente

#16.1

02/04/1997

RPI 1366

Deferimento

#9.1

03/19/1996

RPI 1320

Exigência - art. 36 da LPI

#6.1

10/03/1995

RPI 1296

Solicitação de exame técnico

#4.1

10/05/1993

RPI 1192

14.4

05/25/1993

RPI 1173

14.7

05/25/1993

RPI 1173

Publicação do pedido de patente

#3.1

04/28/1992

RPI 1117

Pedido de patente depositado

#2.1

11/19/1991

RPI 1094

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