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Official data from INPI

DISPOSITIVO PARA AERAÇÃO DE UM LÍQUIDO OU DE UMA MISTURA OU DE UMA MISTURA LÍQUIDO SÓLIDO

ConcedidaInvention Patent
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Application data

Number

PI8201830

Type

Invention Patent

Filing

03/30/1982

Publication

08/17/1982
View on INPI

Progress at the INPI

  1. Filing03/30/82
  2. Publication08/17/82
  3. Examination06/14/83
  4. Allowance12/27/88
  5. Grant07/25/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Serrana de Mineração Ltda

SP, BR

Serrana S/A de Mineração

SP, BR

Inventors

M. C. (pessoa física)

BR

Technical data

IPC Classification

B01F 5/04B03D 1/14

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/25/1989

RPI 979

Deferimento

#9.1

12/27/1988

RPI 949

Exigência - art. 36 da LPI

#6.1

05/14/1985

RPI 760

Exigência - art. 36 da LPI

#6.1

12/18/1984

RPI 739

Solicitação de exame técnico

#4.1

06/14/1983

RPI 660

Publicação antecipada

#3.2

08/17/1982

RPI 617

Pedido de patente depositado

#2.1

05/18/1982

RPI 604

Carta-patente expirada

#21.1

Patente extinta em 30/03/97

07/01/2008

RPI 1956

20.7

10/03/1995

RPI 1296

20.4

09/26/1995

RPI 1295

20.7

09/26/1995

RPI 1295

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