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Official data from INPI

PROCESSO E SISTEMA PARA A DISPERSÃO DE UM GÁS EM UM LÍQUIDO

PublicadaInvention Patent

Application data

Number

PI8807013

Type

Invention Patent

Filing

12/30/1988

Publication

09/05/1989

Progress at the INPI

  1. Filing12/30/88
  2. Publication09/05/89
  3. Examination08/13/91
  4. Allowance04/07/98
  5. Grant11/24/98
  6. Expired12/18/12

The letters patent expired on 12/18/2012: 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: 09/05/1989. 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

K. K. (pessoa física)

US

L. L. (pessoa física)

US

T. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

139.573 · 12/30/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

09/05/1989

RPI 985

Pedido de patente depositado

#2.1

04/25/1989

RPI 966

Carta-patente expirada

#21.1

Patente extinta em 30/12/2008

12/18/2012

RPI 2189

Concessão da patente

#16.1

11/24/1998

RPI 1455

Deferimento

#9.1

04/07/1998

RPI 1424

Exigência - art. 36 da LPI

#6.1

12/24/1996

RPI 1360

Pedido de licença compulsória

#20.1

11/08/1994

RPI 1249

20.4

11/01/1994

RPI 1248

Solicitação de exame técnico

#4.1

08/13/1991

RPI 1080

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