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Official data from INPI

PASSAGEM DE ENTRADA E DE SAIDA DE AR PARA O ARMAZENAMENTO SECO DE MATERIAIS RADIOATIVOS DE AUTO-AQUECIMENTO

Concessão AnuladaInvention Patent

Application data

Number

PI8002005

Type

Invention Patent

Filing

04/04/1979

Publication

-

Progress at the INPI

  1. Filing04/04/79
  2. Publication
  3. Examination08/03/82
  4. Allowance08/30/83
  5. Grant02/28/84
  6. Expired06/06/95

The letters patent expired on 06/06/1995: 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: 05/15/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NUKEM GMBH

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Inventors

H. W. (pessoa física)

K. O. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

16.3

05/15/1984

RPI 708

Concessão da patente

#16.1

02/28/1984

RPI 697

Notificação para pagamento de retribuição

#13.1

12/20/1983

RPI 687

Deferimento

#9.1

08/30/1983

RPI 671

Exigência - art. 36 da LPI

#6.1

03/15/1983

RPI 647

Solicitação de exame técnico

#4.1

08/03/1982

RPI 615

Carta-patente expirada

#21.1

06/06/1995

RPI 1279

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