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Official data from INPI

ELETRODO NEGATIVO PARA ACUMULADORES DE CHUMBO,E PROCESSOS PARA PRODUCAO DE UM AGENTE DE EXPANSAO PARA O DITO ELETRODO

ConcedidaInvention Patent

Application data

Number

PI7805236

Type

Invention Patent

Filing

08/16/1977

Publication

-

Progress at the INPI

  1. Filing08/16/77
  2. Publication
  3. Examination
  4. Allowance10/13/81
  5. Grant07/27/82
  6. Expired05/03/94

The letters patent expired on 05/03/1994: 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: 07/27/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

V. B. (pessoa física)

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Inventors

G. H. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/27/1982

RPI 614

Notificação para pagamento de retribuição

#13.1

03/02/1982

RPI 593

Deferimento

#9.1

10/13/1981

RPI 573

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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