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Official data from INPI

CIRCUITO FECHADO DE LÍQUIDO PARA UM ACOPLAMENTO HIDRODINÂMICO

PublicadaInvention Patent

Application data

Number

PI8705209

Type

Invention Patent

Filing

09/22/1987

Publication

04/18/1989

Progress at the INPI

  1. Filing09/22/87
  2. Publication04/18/89
  3. Examination07/09/91
  4. Allowance08/11/92
  5. Grant04/27/93
  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: 04/18/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Voith Turbo GmbH & Co. Kg

DE

See this company's full portfolio

Inventors

G. W. (pessoa física)

DE

W. B. (pessoa física)

DE

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

04/18/1989

RPI 965

Pedido de patente depositado

#2.1

12/22/1987

RPI 896

Carta-patente expirada

#21.1

Patente extinta em 22/09/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

04/27/1993

RPI 1169

Notificação para pagamento de retribuição

#13.1

12/29/1992

RPI 1152

Deferimento

#9.1

08/11/1992

RPI 1132

Solicitação de exame técnico

#4.1

07/09/1991

RPI 1075

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