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Official data from INPI

Divisor radial divergente de vazão de líquidos

Prazo de SigiloInvention Patent
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Application data

Number

PI8901564

Type

Invention Patent

Filing

03/29/1989

Publication

10/30/1990
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Progress at the INPI

  1. Filing03/29/89
  2. Publication10/30/90
  3. Examination08/20/91
  4. Allowance08/12/97
  5. Grant07/28/98
  6. Expired12/18/12

The letters patent expired on 12/18/2012: 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: 05/16/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia de Saneamento do Paraná - SANEPAR.

PR, BR

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Inventors

C. G. (pessoa física)

BR

D. J. (pessoa física)

BR

Technical data

IPC Classification

C02F 11/04C02F 3/28

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

05/16/1989

RPI 969

Carta-patente expirada

#21.1

Patente extinta em 29/03/2009

12/18/2012

RPI 2189

Concessão da patente

#16.1

07/28/1998

RPI 1440

Deferimento

#9.1

08/12/1997

RPI 1393

Exigência - art. 36 da LPI

#6.1

10/22/1996

RPI 1351

Exigência - art. 36 da LPI

#6.1

02/27/1996

RPI 1317

15.5

11/16/1993

RPI 1198

Solicitação de exame técnico

#4.1

08/20/1991

RPI 1081

Publicação do pedido de patente

#3.1

10/30/1990

RPI 1039

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FLOCULAÇÃO EM MEIO GARNULAR.

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