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Official data from INPI

APERFEICOAMENTO NA ELETRO DEPOSICAO DE SUBSTRATOS FERROSOS COM UM REVESTIMENTO DE ESTANHO

Arquivada/ExtintaInvention Patent

Application data

Number

PI7500002

Type

Invention Patent

Filing

03/25/1974

Publication

-

Progress at the INPI

  1. Filing03/25/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 09/21/1993. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

USS ENG & CONSULT

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Inventors

J. W. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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