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Official data from INPI

METODO CONSTRUTIVO PARA AUMENTAR O EFEITO DA PROTENSAO NAS ESTRUTURAS

ConcedidaInvention Patent

Application data

Number

PI7806313

Type

Invention Patent

Filing

09/22/1978

Publication

-

Progress at the INPI

  1. Filing09/22/78
  2. Publication
  3. Examination08/24/82
  4. Allowance05/31/83
  5. Grant12/27/83
  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: 12/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

F. D. (pessoa física)

Inventors

D. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/27/1983

RPI 688

Notificação para pagamento de retribuição

#13.1

09/27/1983

RPI 675

Deferimento

#9.1

05/31/1983

RPI 658

Solicitação de exame técnico

#4.1

08/24/1982

RPI 618

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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