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Official data from INPI

INSTALACAO PARA A PURIFICACAO MECANICA DE UMA CORRENTE DE AGUA DE REFRIGERACAO DE CONDENSADORES DE USINAS ELETRICAS

Em AnáliseInvention Patent
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Application data

Number

PI8306923

Type

Invention Patent

Filing

12/17/1982

Publication

07/24/1984
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Progress at the INPI

  1. Filing12/17/82
  2. Publication07/24/84
  3. Examination10/02/84
  4. Allowance07/14/87
  5. Grant11/24/87
  6. Terminated10/10/89

The patent was granted on 11/24/1987 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 10/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TAPROGGE GMBH [DE]

Inventors

E. K. (pessoa física)

G. K. (pessoa física)

K. (pessoa física)

M. G. (pessoa física)

P. D. (pessoa física)

Technical data

IPC Classification

B01D 25/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

10/10/1989

RPI 990

Concessão da patente

#16.1

11/24/1987

RPI 892

Deferimento

#9.1

07/14/1987

RPI 873

Exigência - art. 36 da LPI

#6.1

09/17/1985

RPI 778

Solicitação de exame técnico

#4.1

10/02/1984

RPI 728

Publicação do pedido de patente

#3.1

07/24/1984

RPI 718

Pedido de patente depositado

#2.1

02/28/1984

RPI 697

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