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Official data from INPI

PROCESSO E DISPOSITIVO PARA CONSTRUCAO DE PAREDES LATERAIS A PARTIR DE UM CONDUTO SUBTERRANEO E CONSTRUCAO ASSIM OBTIDA

ConcedidaInvention Patent

Application data

Number

PI7901069

Type

Invention Patent

Filing

02/21/1978

Publication

-

Progress at the INPI

  1. Filing02/21/78
  2. Publication
  3. Examination11/17/81
  4. Allowance09/14/82
  5. Grant04/26/83
  6. Terminated09/25/90

The patent was granted on 04/26/1983 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 04/26/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

F. A. (pessoa física)

Inventors

B. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/26/1983

RPI 653

Notificação para pagamento de retribuição

#13.1

01/25/1983

RPI 640

Deferimento

#9.1

09/14/1982

RPI 621

Solicitação de exame técnico

#4.1

11/17/1981

RPI 578

Anuidade - prazo legal encerrado

#18.2

09/25/1990

RPI 1034

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