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Official data from INPI

DISPOSITIVO DE FECHAMENTO E REGULAGEM PARA O VAZAMENTO DE MASSA FUNDIDA METÁLICA FLUIDA.

PublicadaInvention Patent

Application data

Number

PI8900662

Type

Invention Patent

Filing

02/15/1989

Publication

10/10/1989

Progress at the INPI

  1. Filing02/15/89
  2. Publication10/10/89
  3. Examination04/16/91
  4. Allowance01/13/98
  5. Grant08/25/98
  6. Expired12/18/12

The letters patent expired on 12/18/2012: 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: 10/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Didier-Werke Ag

DE

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Inventors

R. B. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 38 05 071.4 · 02/18/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/10/1989

RPI 990

Pedido de patente depositado

#2.1

03/28/1989

RPI 962

Carta-patente expirada

#21.1

Patente extinta em 15/02/2009

12/18/2012

RPI 2189

Concessão da patente

#16.1

08/25/1998

RPI 1444

Deferimento

#9.1

01/13/1998

RPI 1412

Exigência - art. 36 da LPI

#6.1

02/21/1996

RPI 1316

Solicitação de exame técnico

#4.1

04/16/1991

RPI 1063

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