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Official data from INPI

PROCESSO PARA SEPARAR GASES INERTES

ConcedidaInvention Patent

Application data

Number

PI8107389

Type

Invention Patent

Filing

11/15/1980

Publication

08/10/1982

Progress at the INPI

  1. Filing11/15/80
  2. Publication08/10/82
  3. Examination07/31/84
  4. Allowance03/11/86
  5. Grant09/30/86
  6. Terminated08/07/90

The patent was granted on 09/30/1986 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: 09/30/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MITSUI TOATSU CHEMICALS [JP]

TOYO ENGINEERING CORP [JP]

See this company's full portfolio

Inventors

H. M. (pessoa física)

H. F. (pessoa física)

H. O. (pessoa física)

S. I. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/30/1986

RPI 832

Notificação para pagamento de retribuição

#13.1

07/01/1986

RPI 819

Deferimento

#9.1

03/11/1986

RPI 803

Exigência - art. 36 da LPI

#6.1

03/19/1985

RPI 752

Solicitação de exame técnico

#4.1

07/31/1984

RPI 719

14.1

04/10/1984

RPI 703

Publicação do pedido de patente

#3.1

08/10/1982

RPI 616

Pedido de patente depositado

#2.1

12/29/1981

RPI 584

Anuidade - prazo legal encerrado

#18.2

08/07/1990

RPI 1027

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