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Official data from INPI

DISPOSITIVO PARA DISTRIBUIÇÃO GRAVIMÉTRICA DE LÍQUIDO PARA COLUNAS TROCADORAS DE SUBSTÂNCIAS E DE CALOR

ConcedidaInvention Patent

Application data

Number

PI8400873

Type

Invention Patent

Filing

02/24/1984

Publication

10/09/1984

Progress at the INPI

  1. Filing02/24/84
  2. Publication10/09/84
  3. Examination10/29/85
  4. Allowance05/09/89
  5. Grant11/28/89
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Sulzer Brothers Ltd.

CH

See this company's full portfolio

Inventors

D. M. (pessoa física)

CH

Technical data

IPC Classification

Priority claims

CH

1111/83 · 03/01/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/28/1989

RPI 997

Notificação para pagamento de retribuição

#13.1

09/05/1989

RPI 985

Deferimento

#9.1

05/09/1989

RPI 968

Exigência - art. 36 da LPI

#6.1

11/22/1988

RPI 944

Solicitação de exame técnico

#4.1

10/29/1985

RPI 784

Publicação do pedido de patente

#3.1

10/09/1984

RPI 729

Pedido de patente depositado

#2.1

05/08/1984

RPI 707

Carta-patente expirada

#21.1

Patente extinta em 24/02/99

07/08/2008

RPI 1957

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