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Official data from INPI

BATERIA ALCALINA PRIMARIA E PROCESSO PARA FABRICAR E MISTURA DESPOLARIZADORA NELA USADA

Em AnáliseInvention Patent

Application data

Number

PI7607645

Type

Invention Patent

Filing

03/15/1975

Publication

-

Progress at the INPI

  1. Filing03/15/75
  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: 11/24/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ESB INC

Inventors

M. E. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

11/24/1987

RPI 892

Pedido de licença compulsória

#20.1

04/10/1984

RPI 703

20.4

03/07/1984

RPI 698

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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