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Official data from INPI

Depurador de turbilhão

PublicadaInvention Patent

Application data

Number

PI8706300

Type

Invention Patent

Filing

11/18/1987

Publication

06/13/1989

Progress at the INPI

  1. Filing11/18/87
  2. Publication06/13/89
  3. Examination07/30/91
  4. Allowance09/06/94
  5. Grant06/27/95
  6. Expired07/29/08

The letters patent expired on 07/29/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 06/13/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

J. M. Voith GmbH

DE

See this company's full portfolio

Inventors

H. D. (pessoa física)

DE

J. T. (pessoa física)

DE

P. S. (pessoa física)

DE

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

06/13/1989

RPI 973

Pedido de patente depositado

#2.1

03/01/1988

RPI 906

Carta-patente expirada

#21.1

Patente extinta em 18/11/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

06/27/1995

RPI 1282

Republicação - classificação IPC

#15.11

04/04/1995

RPI 1270

Notificação para pagamento de retribuição

#13.1

01/10/1995

RPI 1258

Deferimento

#9.1

09/06/1994

RPI 1240

Solicitação de exame técnico

#4.1

07/30/1991

RPI 1078

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