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Official data from INPI

PROCESSO E DISPOSITIVO PARA O CONTROLE DO COMPORTAMENTO ELETRICO DE UMA DESCARGA LUMINOSA EM EFLUVIOS,DE CORRENTE DE FORTE INTENSIDADE

Em AnáliseInvention Patent

Application data

Number

PI7700947

Type

Invention Patent

Filing

02/18/1976

Publication

-

Progress at the INPI

  1. Filing02/18/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  6. Expired07/27/93

The letters patent expired on 07/27/1993: 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: 12/04/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

B. A. (pessoa física)

Inventors

O. W. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

12/04/1984

RPI 737

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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