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Official data from INPI

PROCESSO PARA REMOVER CONTAMINANTES OLEOSOS DE SUPERFÍCIES AQUÁTICAS

PublicadaInvention Patent

Application data

Number

PI8600923

Type

Invention Patent

Filing

03/04/1986

Publication

10/13/1987

Progress at the INPI

  1. Filing03/04/86
  2. Publication10/13/87
  3. Examination05/01/90
  4. Allowance02/22/94
  5. Grant10/25/94
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 10/13/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

L. L. (pessoa física)

RJ, BR

Inventors

E. M. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/13/1987

RPI 886

Pedido de patente depositado

#2.1

08/12/1986

RPI 825

Carta-patente expirada

#21.1

Patente extinta em 04/03/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

10/25/1994

RPI 1247

Notificação para pagamento de retribuição

#13.1

06/21/1994

RPI 1229

Deferimento

#9.1

02/22/1994

RPI 1212

Exigência - art. 36 da LPI

#6.1

06/15/1993

RPI 1176

Exigência - art. 36 da LPI

#6.1

01/19/1993

RPI 1155

Solicitação de exame técnico

#4.1

05/01/1990

RPI 1016

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