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Official data from INPI

PROCESSO E SISTEMA PARA APERFEIÇOAMENTO DA DISSOLUÇÃO E/OU REAÇÃO DE OXIGÊNIO EM LÍQUIDOS

Arquivada/ExtintaInvention Patent

Application data

Number

PI9104063

Type

Invention Patent

Filing

09/23/1991

Publication

06/02/1992

Progress at the INPI

  1. Filing09/23/91
  2. Publication06/02/92
  3. Examination10/05/93
  4. Allowance07/06/99
  5. Grant12/28/99
  6. Expired06/11/13

The letters patent expired on 06/11/2013: 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: 06/11/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Praxair Technology, Inc.

US

Union Carbide Industrial Gases Technology Corporation

US

See this company's full portfolio

Inventors

K. K. (pessoa física)

US

L. L. (pessoa física)

US

T. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

586.945 · 09/24/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 23/09/2011

06/11/2013

RPI 2214

16.3

Ref. RPI 1512 de 28/12/1999 item (72)

11/04/2003

RPI 1713

Concessão da patente

#16.1

12/28/1999

RPI 1512

Deferimento

#9.1

07/06/1999

RPI 1487

Conhecimento de parecer técnico

#7.1

12/01/1998

RPI 1456

4.1.2

04/12/1994

RPI 1219

Solicitação de exame técnico

#4.1

10/05/1993

RPI 1192

14.4

06/01/1993

RPI 1174

14.7

06/01/1993

RPI 1174

Publicação do pedido de patente

#3.1

06/02/1992

RPI 1122

Pedido de patente depositado

#2.1

10/29/1991

RPI 1091

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