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Official data from INPI

DISPOSITIVO PARA RECALQUE DE RESIDUOS DECANTADOS

Em AnáliseInvention Patent

Application data

Number

PI8405087

Type

Invention Patent

Filing

10/09/1984

Publication

05/13/1986

Progress at the INPI

  1. Filing10/09/84
  2. Publication05/13/86
  3. Examination05/24/88
  4. Allowance09/03/91
  5. Grant05/26/92
  6. Terminated09/02/97

The patent was granted on 05/26/1992 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: 05/24/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Usinas Siderúrgicas de Minas Gerais S/A - Usiminas

MG, BR

See this company's full portfolio

Inventors

G. A. (pessoa física)

BR

J. L. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

05/24/1988

RPI 918

Retificação

#15.6

12/15/1987

RPI 895

Retificação

#15.3

09/01/1987

RPI 880

Publicação do pedido de patente

#3.1

05/13/1986

RPI 812

Pedido de patente depositado

#2.1

12/26/1984

RPI 740

Anuidade - prazo legal encerrado

#18.2

09/02/1997

RPI 1396

Concessão da patente

#16.1

05/26/1992

RPI 1121

Notificação para pagamento de retribuição

#13.1

01/07/1992

RPI 1101

Deferimento

#9.1

09/03/1991

RPI 1083

Exigência - art. 36 da LPI

#6.1

02/19/1991

RPI 1055

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