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Official data from INPI

PROCESSO E DISPOSITIVO PARA REDUÇÃO DA CONCENTRAÇÃO DE ÓXIDO NÍTRICO NA CORRENTE DE GÁS DE DESCARGA DE PROCESSOS DE COMBUSTÃO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9005976

Type

Invention Patent

Filing

11/26/1990

Publication

09/24/1991

Progress at the INPI

  1. Filing11/26/90
  2. Publication09/24/91
  3. Examination03/24/92
  4. Allowance08/05/97
  5. Grant11/24/98
  6. Expired05/21/13

The letters patent expired on 05/21/2013: 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: 05/21/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Martin GMBH Fuer Umwelt- Und Energietechnik

DE

See this company's full portfolio

Inventors

J. M. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 39 39 197.3 · 11/27/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 26/11/2010

05/21/2013

RPI 2211

Concessão da patente

#16.1

11/24/1998

RPI 1455

Deferimento

#9.1

08/05/1997

RPI 1392

Solicitação de exame técnico

#4.1

03/24/1992

RPI 1112

Publicação do pedido de patente

#3.1

09/24/1991

RPI 1086

Pedido de patente depositado

#2.1

05/07/1991

RPI 1066

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