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Official data from INPI

APARELHO PARA GERAR GÁS REDUTOR/COMBUSTÍVEL A PARTIR DE CARVÃO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9002452

Type

Invention Patent

Filing

05/24/1990

Publication

11/26/1991

Progress at the INPI

  1. Filing05/24/90
  2. Publication11/26/91
  3. Examination11/24/92
  4. Allowance02/13/02
  5. Grant07/23/02
  6. Expired01/15/13

The letters patent expired on 01/15/2013: 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: 01/15/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. D. (pessoa física)

MG, BR

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Inventors

J. R. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 23/07/2012

01/15/2013

RPI 2193

Concessão da patente

#16.1

07/23/2002

RPI 1646

6.8

Ref. à 1355 de 19/11/1996, por ter sido indevido.

02/13/2002

RPI 1623

Deferimento

#9.1

02/13/2002

RPI 1623

Exigência - art. 36 da LPI

#6.1

11/19/1996

RPI 1355

Solicitação de exame técnico

#4.1

11/24/1992

RPI 1147

Publicação do pedido de patente

#3.1

11/26/1991

RPI 1095

Pedido de patente depositado

#2.1

10/02/1990

RPI 1035

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