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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI7405893

Type

Invention Patent

Filing

07/17/1974

Publication

-

Progress at the INPI

  1. Filing07/17/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant09/29/81
  6. Expired11/17/92

The letters patent expired on 11/17/1992: 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: 08/11/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Mahle Gmbh

DE

See this company's full portfolio

Inventors

E. B. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

18.8

08/11/1987

RPI 877

Anuidade - prazo legal encerrado

#18.2

06/02/1987

RPI 867

Concessão da patente

#16.1

09/29/1981

RPI 571

Carta-patente expirada

#21.1

11/17/1992

RPI 1146

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