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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI7404392

Type

Invention Patent

Filing

05/29/1974

Publication

-

Progress at the INPI

  1. Filing05/29/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant03/30/82
  6. Expired08/25/92

The letters patent expired on 08/25/1992: 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: 03/30/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Nitto Kohki Co. Ltd.

JP

Inventors

E. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/30/1982

RPI 597

Carta-patente expirada

#21.1

08/25/1992

RPI 1134

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