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Official data from INPI

COLUNA DE FUNDO PERFURADO PARA A EXTRAÇÃO POR CONTRACORRENTE

Em AnáliseInvention Patent

Application data

Number

PI8600751

Type

Invention Patent

Filing

02/24/1986

Publication

11/04/1986

Progress at the INPI

  1. Filing02/24/86
  2. Publication11/04/86
  3. Examination09/13/88
  4. Allowance11/16/93
  5. Grant06/28/94
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 09/13/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. M. (pessoa física)

DE

W. M. (pessoa física)

DE

See this company's full portfolio

Inventors

K. H. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 35 06 693.8 · 02/26/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

09/13/1988

RPI 934

Publicação do pedido de patente

#3.1

11/04/1986

RPI 837

Pedido de patente depositado

#2.1

08/12/1986

RPI 825

Carta-patente expirada

#21.1

Patente extinta em 24/02/2001

07/22/2008

RPI 1959

Transferência deferida

#25.1

06/03/1997

RPI 1383

Concessão da patente

#16.1

06/28/1994

RPI 1230

Notificação para pagamento de retribuição

#13.1

03/22/1994

RPI 1216

Deferimento

#9.1

11/16/1993

RPI 1198

Exigência - art. 36 da LPI

#6.1

10/15/1991

RPI 1089

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