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Official data from INPI

DISPOSITIVO PARA REMOVER ÓLEO DE UMA CORRENTE DE GÁS COMPRIMIDO

PublicadaInvention Patent

Application data

Number

PI8900846

Type

Invention Patent

Filing

02/24/1989

Publication

10/17/1989

Progress at the INPI

  1. Filing02/24/89
  2. Publication10/17/89
  3. Examination11/13/90
  4. Allowance08/17/93
  5. Grant03/29/94
  6. Expired12/15/09

The letters patent expired on 12/15/2009: 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: 10/17/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Maschinenfabrik Sulzer-Burckhardt AG

CH

See this company's full portfolio

Inventors

E. M. (pessoa física)

CH

Technical data

IPC Classification

Priority claims

CH

00707/88 · 02/25/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/17/1989

RPI 991

Pedido de patente depositado

#2.1

04/11/1989

RPI 964

Carta-patente expirada

#21.1

Patente extinta em 24/02/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

03/29/1994

RPI 1217

Deferimento

#9.1

08/17/1993

RPI 1185

Solicitação de exame técnico

#4.1

11/13/1990

RPI 1041

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