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Official data from INPI

INSTALAÇÃO E PROCESSO PARA SEPARAÇÃO DE AR PARA RECUPERAÇÃO DE OXIGENIO LÍQUIDO E NITROGÊNIO LÍQUIDO

ConcedidaInvention Patent

Application data

Number

PI8202249

Type

Invention Patent

Filing

04/19/1982

Publication

04/05/1983

Progress at the INPI

  1. Filing04/19/82
  2. Publication04/05/83
  3. Examination03/26/85
  4. Allowance07/08/86
  5. Grant03/17/87
  6. Terminated10/16/90

The patent was granted on 03/17/1987 and later terminated for failure to pay the annuities. The technology is in the public domain 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

Air Products Anmd Chermicals Inc .,

US

Inventors

A. P. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

US

255.910 · 04/20/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/17/1987

RPI 856

Notificação para pagamento de retribuição

#13.1

11/04/1986

RPI 837

Deferimento

#9.1

07/08/1986

RPI 820

Exigência - art. 36 da LPI

#6.1

10/15/1985

RPI 782

Solicitação de exame técnico

#4.1

03/26/1985

RPI 753

Publicação do pedido de patente

#3.1

04/05/1983

RPI 650

Pedido de patente depositado

#2.1

06/08/1982

RPI 607

Anuidade - prazo legal encerrado

#18.2

10/16/1990

RPI 1037

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