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Official data from INPI

DISPOSITIVO DE ESVAZIAMENTO DE SILOS

PublicadaInvention Patent

Application data

Number

PI8701554

Type

Invention Patent

Filing

04/03/1987

Publication

01/26/1988

Progress at the INPI

  1. Filing04/03/87
  2. Publication01/26/88
  3. Examination05/22/90
  4. Allowance01/02/91
  5. Grant07/30/91
  6. Terminated12/31/96

The patent was granted on 07/30/1991 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: 01/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Jean Henri Lagneau, francês

FR

Inventors

J. L. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

86 04847 · 04/04/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

01/26/1988

RPI 901

Pedido de patente depositado

#2.1

07/14/1987

RPI 873

Anuidade - prazo legal encerrado

#18.2

12/31/1996

RPI 1361

Concessão da patente

#16.1

07/30/1991

RPI 1078

Notificação para pagamento de retribuição

#13.1

04/16/1991

RPI 1063

Deferimento

#9.1

01/02/1991

RPI 1048

Solicitação de exame técnico

#4.1

05/22/1990

RPI 1019

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