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Official data from INPI

PROCESSO PARA SEPARAR GASES ACIDOS E AMONIA DE UMA SOLUCAO AQUOSA DILUIDA DESTES

ConcedidaInvention Patent

Application data

Number

PI7704415

Type

Invention Patent

Filing

07/08/1976

Publication

-

Progress at the INPI

  1. Filing07/08/76
  2. Publication
  3. Examination
  4. Allowance06/14/83
  5. Grant12/27/83
  6. Expired07/13/93

The letters patent expired on 07/13/1993: 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: 12/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

USS ENG & CONSULT

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Inventors

D. W. (pessoa física)

G. D. (pessoa física)

M. E. (pessoa física)

S. G. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/27/1983

RPI 688

Notificação para pagamento de retribuição

#13.1

10/04/1983

RPI 676

Deferimento

#9.1

06/14/1983

RPI 660

Exigência - art. 36 da LPI

#6.1

07/06/1982

RPI 611

15.0

01/12/1982

RPI 586

Conhecimento de parecer técnico

#7.1

12/29/1981

RPI 584

Carta-patente expirada

#21.1

07/13/1993

RPI 1180

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