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Official data from INPI

DISPOSITIVO PARA O COMANDO DE UMA VÁLVULA DE SEGURANÇA

Arquivada/ExtintaInvention Patent

Application data

Number

PI8905180

Type

Invention Patent

Filing

10/12/1989

Publication

05/15/1990

Progress at the INPI

  1. Filing10/12/89
  2. Publication05/15/90
  3. Examination07/16/91
  4. Allowance11/03/93
  5. Grant05/31/94
  6. Expired12/29/09

The letters patent expired on 12/29/2009: 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: 12/29/2009. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CCI AG

CH

Sulzer AG

CH

Sulzer Brothers Limited

CH

Inventors

E. T. (pessoa física)

CH

Technical data

IPC Classification

Priority claims

CH

3822/88 · 10/13/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 12/10/2004

12/29/2009

RPI 2034

Transferência deferida

#25.1

Transferido de: Sulzer Ag

01/12/1999

RPI 1462

Alteração de nome deferida

#25.4

Alterado de: Sulzer Brothers LTD

11/10/1998

RPI 1453

Concessão da patente

#16.1

05/31/1994

RPI 1226

Deferimento

#9.1

11/03/1993

RPI 1196

Solicitação de exame técnico

#4.1

07/16/1991

RPI 1076

Publicação do pedido de patente

#3.1

05/15/1990

RPI 1018

Pedido de patente depositado

#2.1

03/01/1990

RPI 1007

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