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Official data from INPI

DISPOSITIVO E PROCESSO DE LIMPEZA DE PANELA DE AÇO

PublicadaInvention Patent

Application data

Number

PI8805935

Type

Invention Patent

Filing

11/04/1988

Publication

07/18/1989

Progress at the INPI

  1. Filing11/04/88
  2. Publication07/18/89
  3. Examination05/29/90
  4. Allowance03/17/92
  5. Grant01/26/93
  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: 07/18/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cia. Siderúrgica Belgo Mineira

MG, BR

Inventors

H. C. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação antecipada

#3.2

07/18/1989

RPI 978

Pedido de patente depositado

#2.1

04/04/1989

RPI 963

Carta-patente expirada

#21.1

Patente extinta em 04/11/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

01/26/1993

RPI 1156

Notificação para pagamento de retribuição

#13.1

09/01/1992

RPI 1135

Deferimento

#9.1

03/17/1992

RPI 1111

Exigência - art. 36 da LPI

#6.1

07/30/1991

RPI 1078

Exigência - art. 36 da LPI

#6.1

02/05/1991

RPI 1053

Solicitação de exame técnico

#4.1

05/29/1990

RPI 1020

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