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Official data from INPI

SEM TITULO

ConcedidaInvention Patent
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Application data

Number

PI7407374

Type

Invention Patent

Filing

09/05/1974

Publication

-
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Progress at the INPI

  1. Filing09/05/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant05/06/80
  6. Expired11/24/92

The letters patent expired on 11/24/1992: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 05/06/1980. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Akademiet for de Tekniske Videnskaber, Svejsecentralen

DK

Inventors

E. B. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/06/1980

RPI 498

Carta-patente expirada

#21.1

11/24/1992

RPI 1147

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