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Official data from INPI

TAMPA REFRATÁRIA PARA DISTRIBUIDORES COM PLACA PROTETORA DESCARTÁVEL DE MATERIAL NÃO METÁLICO

PublicadaInvention Patent

Application data

Number

PI8802074

Type

Invention Patent

Filing

04/29/1988

Publication

11/21/1989

Progress at the INPI

  1. Filing04/29/88
  2. Publication11/21/89
  3. Examination08/14/90
  4. Allowance06/30/92
  5. Grant04/27/93
  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: 11/21/1989. 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

C. C. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/21/1989

RPI 996

Pedido de patente depositado

#2.1

06/13/1989

RPI 973

Carta-patente expirada

#21.1

Patente extinta em 29/04/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

04/27/1993

RPI 1169

Notificação para pagamento de retribuição

#13.1

11/17/1992

RPI 1146

Republicação - classificação IPC

#15.11

08/11/1992

RPI 1132

Deferimento

#9.1

06/30/1992

RPI 1126

Solicitação de exame técnico

#4.1

08/14/1990

RPI 1028

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