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Official data from INPI

PROCESSO PARA DESINFETAR ÁGUA RESIDUAL

Arquivada/ExtintaInvention Patent

Application data

Number

PI9003014

Type

Invention Patent

Filing

06/27/1990

Publication

01/07/1992

Progress at the INPI

  1. Filing06/27/90
  2. Publication01/07/92
  3. Examination12/28/93
  4. Allowance05/20/97
  5. Grant01/21/98
  6. Expired01/22/13

The letters patent expired on 01/22/2013: 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: 01/22/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

R. K. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 27/06/2010

01/22/2013

RPI 2194

Concessão da patente

#16.1

01/21/1998

RPI 1413

Deferimento

#9.1

05/20/1997

RPI 1381

Exigência - art. 36 da LPI

#6.1

07/30/1996

RPI 1339

Solicitação de exame técnico

#4.1

12/28/1993

RPI 1204

Publicação do pedido de patente

#3.1

01/07/1992

RPI 1101

Pedido de patente depositado

#2.1

11/13/1990

RPI 1041

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