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Official data from INPI

DISPOSITIVO PARA AERAÇÃO DE ÁGUAS TRATADAS E RESIDUAIS

ConcedidaInvention Patent

Application data

Number

PI8400116

Type

Invention Patent

Filing

01/11/1984

Publication

05/02/1984

Progress at the INPI

  1. Filing01/11/84
  2. Publication05/02/84
  3. Examination07/10/84
  4. Allowance11/16/88
  5. Grant09/26/89
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. H. (pessoa física)

SC, BR

Inventors

D. H. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

03/07/1989

RPI 959

Deferimento

#9.1

11/16/1988

RPI 943

Exigência - art. 36 da LPI

#6.1

06/07/1988

RPI 920

Exigência - art. 36 da LPI

#6.1

03/04/1986

RPI 802

Solicitação de exame técnico

#4.1

07/10/1984

RPI 716

Publicação antecipada

#3.2

05/02/1984

RPI 706

Pedido de patente depositado

#2.1

03/20/1984

RPI 700

Carta-patente expirada

#21.1

Patente extinta em 11/01/99

07/08/2008

RPI 1957

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