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Official data from INPI

PROCESSO PARA REMOVER E MEIOS PARA REMOVER A QUEIMA DE FULIGEM DO FILTRO DOS GASES DE ESCAPAMENTO DE UM MOTOR DE COMBUSTÃO INTERNA

ConcedidaInvention Patent

Application data

Number

PI8504956

Type

Invention Patent

Filing

10/02/1985

Publication

05/12/1987

Progress at the INPI

  1. Filing10/02/85
  2. Publication05/12/87
  3. Examination12/08/87
  4. Allowance02/28/89
  5. Grant09/26/89
  6. Terminated08/15/95

The patent was granted on 09/26/1989 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Filterwerk Mann & Hummel Gmbh

DE

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Inventors

G. W. (pessoa física)

DE

H. E. (pessoa física)

DE

M. W. (pessoa física)

DE

R. N. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

3436351.3 · 10/04/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

07/11/1989

RPI 977

Deferimento

#9.1

02/28/1989

RPI 958

Exigência - art. 36 da LPI

#6.1

08/16/1988

RPI 930

Solicitação de exame técnico

#4.1

12/08/1987

RPI 894

Publicação do pedido de patente

#3.1

05/12/1987

RPI 864

Pedido de patente depositado

#2.1

12/17/1985

RPI 791

Anuidade - prazo legal encerrado

#18.2

08/15/1995

RPI 1289

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