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Official data from INPI

PROCESSO DE PURIFICACAO E FRACIONAMENTO DE UMA MISTURA DE GASES

Em AnáliseInvention Patent

Application data

Number

PI7803480

Type

Invention Patent

Filing

06/01/1977

Publication

-

Progress at the INPI

  1. Filing06/01/77
  2. Publication
  3. Examination
  4. Allowance09/08/82
  5. Grant03/29/83
  6. Terminated06/14/88

The patent was granted on 03/29/1983 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

LINDE AG

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Inventors

B. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/14/1988

RPI 921

Concessão da patente

#16.1

03/29/1983

RPI 649

Notificação para pagamento de retribuição

#13.1

01/11/1983

RPI 638

Deferimento

#9.1

09/08/1982

RPI 620

Exigência - art. 36 da LPI

#6.1

02/02/1982

RPI 589

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