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Official data from INPI

PROCESSO DE ELIMINAÇÃO DOS GASES DISSOLVIDOS EM UMA SOLUÇÃO AQUOSA DE ÓXIDO DE ETILENO

Em AnáliseInvention Patent

Application data

Number

PI8502794

Type

Invention Patent

Filing

06/12/1985

Publication

01/21/1987

Progress at the INPI

  1. Filing06/12/85
  2. Publication01/21/87
  3. Examination03/17/87
  4. Allowance05/09/95
  5. Grant10/31/95
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 03/17/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Atochem

FR

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Inventors

F. D. (pessoa física)

FR

H. N. (pessoa física)

FR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

03/17/1987

RPI 856

Publicação do pedido de patente

#3.1

01/21/1987

RPI 848

Pedido de patente depositado

#2.1

08/27/1985

RPI 775

Carta-patente expirada

#21.1

Patente extinta em 12/06/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

10/31/1995

RPI 1300

Deferimento

#9.1

05/09/1995

RPI 1275

Exigência - art. 36 da LPI

#6.1

11/29/1994

RPI 1252

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