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Official data from INPI

PROCESSO E APARELHO PARA MISTURAR UM GÁS E UM LÍQUIDO

Arquivada/ExtintaInvention Patent

Application data

Number

PI8906725

Type

Invention Patent

Filing

12/22/1989

Publication

08/21/1990

Progress at the INPI

  1. Filing12/22/89
  2. Publication08/21/90
  3. Examination10/15/91
  4. Allowance10/27/98
  5. Grant03/30/99
  6. Expired01/02/13

The letters patent expired on 01/02/2013: 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: 01/02/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Praxair Technology, Inc.

US

U. C. (pessoa física)

US

See this company's full portfolio

Inventors

J. J. (pessoa física)

US

L. L. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

289.265 · 12/23/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 22/12/2009

01/02/2013

RPI 2191

Concessão da patente

#16.1

03/30/1999

RPI 1473

Deferimento

#9.1

10/27/1998

RPI 1451

Exigência - art. 36 da LPI

#6.1

10/28/1997

RPI 1404

Exigência - art. 36 da LPI

#6.1

09/10/1996

RPI 1345

14.1

10/25/1994

RPI 1247

14.4

10/18/1994

RPI 1246

Solicitação de exame técnico

#4.1

10/15/1991

RPI 1089

Publicação do pedido de patente

#3.1

08/21/1990

RPI 1029

Pedido de patente depositado

#2.1

05/01/1990

RPI 1016

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