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Official data from INPI

Método para tratamento de uma água contendo resíduos orgânicos por fermentação metanogênica

Arquivada/ExtintaInvention Patent

Application data

Number

PI9004192

Type

Invention Patent

Filing

08/24/1990

Publication

09/03/1991

Progress at the INPI

  1. Filing08/24/90
  2. Publication09/03/91
  3. Examination09/28/93
  4. Allowance08/19/97
  5. Grant07/28/98
  6. Expired01/29/13

The letters patent expired on 01/29/2013: 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: 01/29/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NGK Insulators, Ltd.

JP

See this company's full portfolio

Inventors

M. K. (pessoa física)

JP

N. M. (pessoa física)

JP

T. N. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

146.842 · 06/05/1990

JP

219.469 · 08/25/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 24/08/2010

01/29/2013

RPI 2195

Concessão da patente

#16.1

07/28/1998

RPI 1440

Deferimento

#9.1

08/19/1997

RPI 1394

Exigência - art. 36 da LPI

#6.1

01/21/1997

RPI 1364

Solicitação de exame técnico

#4.1

09/28/1993

RPI 1191

Publicação do pedido de patente

#3.1

09/03/1991

RPI 1083

Pedido de patente depositado

#2.1

02/26/1991

RPI 1056

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