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Official data from INPI

PROCESSO E DISPOSITIVO PARA SEPARACAO DE COMPONENTES DESSUBLIMAVEIS DE MISTURAS DE GASES

ConcedidaInvention Patent

Application data

Number

PI7707985

Type

Invention Patent

Filing

11/30/1976

Publication

-

Progress at the INPI

  1. Filing11/30/76
  2. Publication
  3. Examination
  4. Allowance08/03/82
  5. Grant02/22/83
  6. Expired07/20/93

The letters patent expired on 07/20/1993: 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: 02/22/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

KERNFORSCHUNG GMBH GES FUER

Inventors

S. J. (pessoa física)

S. R. (pessoa física)

S. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/22/1983

RPI 644

Notificação para pagamento de retribuição

#13.1

12/14/1982

RPI 634

Deferimento

#9.1

08/03/1982

RPI 615

Exigência - art. 36 da LPI

#6.1

01/05/1982

RPI 585

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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