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Official data from INPI

APARELHO DE IGNICAO DO TIPO PIEZOELETRICO

ConcedidaInvention Patent

Application data

Number

PI7800575

Type

Invention Patent

Filing

03/31/1977

Publication

-

Progress at the INPI

  1. Filing03/31/77
  2. Publication
  3. Examination
  4. Allowance03/02/82
  5. Grant10/19/82
  6. Expired07/20/93

The letters patent expired on 07/20/1993: 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: 10/19/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

R. K. (pessoa física)

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Inventors

I. K. (pessoa física)

M. H. (pessoa física)

O. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/19/1982

RPI 626

Notificação para pagamento de retribuição

#13.1

06/22/1982

RPI 609

15.0

04/13/1982

RPI 599

Deferimento

#9.1

03/02/1982

RPI 593

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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