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Official data from INPI

PROCESSO PARA SEPARAR O OXIGÊNIO DO AR E O CORRESPONDENTE EQUIPAMENTO

ConcedidaInvention Patent

Application data

Number

PI8503268

Type

Invention Patent

Filing

06/28/1985

Publication

02/10/1987

Progress at the INPI

  1. Filing06/28/85
  2. Publication02/10/87
  3. Examination10/06/87
  4. Allowance08/02/88
  5. Grant09/26/89
  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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Eniplan Indústria e Planejamento Ltda

SP, BR

Inventors

A. C. (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

11/29/1988

RPI 945

Deferimento

#9.1

08/02/1988

RPI 928

Solicitação de exame técnico

#4.1

10/06/1987

RPI 885

Publicação do pedido de patente

#3.1

02/10/1987

RPI 851

Pedido de patente depositado

#2.1

09/17/1985

RPI 778

Carta-patente expirada

#21.1

Patente extinta em 28/06/2000

07/15/2008

RPI 1958

19.1

06/03/1997

RPI 1383

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