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Official data from INPI

FECHO CORREDIÇO GIRATÓRIO PARA VASO METALÚRGICO, BEM COMO ROTOR E/OU ESTATOR PARA FECHO GIRATÓRIO DESTE TIPO

PublicadaInvention Patent

Application data

Number

PI8804766

Type

Invention Patent

Filing

09/15/1988

Publication

04/25/1989

Progress at the INPI

  1. Filing09/15/88
  2. Publication04/25/89
  3. Examination04/02/91
  4. Allowance03/01/95
  5. Grant08/29/95
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 04/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Didier-Werke AG

DE

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Inventors

E. L. (pessoa física)

DE

R. B. (pessoa física)

DE

U. H. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 37 31 600.1 · 09/19/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

04/25/1989

RPI 966

Pedido de patente depositado

#2.1

02/08/1989

RPI 955

Carta-patente expirada

#21.1

Patente extinta em 15/09/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

08/29/1995

RPI 1291

Deferimento

#9.1

03/01/1995

RPI 1265

Solicitação de exame técnico

#4.1

04/02/1991

RPI 1061

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