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Official data from INPI

SENSOR DE PROFUNDIDADE DE IMERSÃO PARA RETIRADAS DE AMOSTRAS EM AÇO LÍQUIDO.

Em AnáliseInvention Patent

Application data

Number

PI8605308

Type

Invention Patent

Filing

10/30/1986

Publication

05/31/1988

Progress at the INPI

  1. Filing10/30/86
  2. Publication05/31/88
  3. Examination08/22/89
  4. Allowance04/06/93
  5. Grant10/26/93
  6. Expired07/22/08

The letters patent expired on 07/22/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 08/22/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica Nacional - CSN

RJ, BR

See this company's full portfolio

Inventors

L. R. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

08/22/1989

RPI 983

Publicação do pedido de patente

#3.1

05/31/1988

RPI 919

Pedido de patente depositado

#2.1

03/31/1987

RPI 858

Carta-patente expirada

#21.1

Patente extinta em 30/10/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

10/26/1993

RPI 1195

Notificação para pagamento de retribuição

#13.1

07/27/1993

RPI 1182

Deferimento

#9.1

04/06/1993

RPI 1166

15.5

09/17/1991

RPI 1085

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