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Official data from INPI

FORNO DE SEÇÃO EM ANEL, E PROCESSO PARA OPERÁ-LO

PublicadaInvention Patent

Application data

Number

PI8703933

Type

Invention Patent

Filing

07/30/1987

Publication

02/14/1989

Progress at the INPI

  1. Filing07/30/87
  2. Publication02/14/89
  3. Examination03/26/91
  4. Allowance01/14/92
  5. Grant10/27/92
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 02/14/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

N. A. (pessoa física)

NO

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Inventors

P. S. (pessoa física)

NO

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

02/14/1989

RPI 956

Pedido de patente depositado

#2.1

10/20/1987

RPI 887

Carta-patente expirada

#21.1

Patente extinta em 30/07/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

10/27/1992

RPI 1143

Notificação para pagamento de retribuição

#13.1

06/02/1992

RPI 1122

Deferimento

#9.1

01/14/1992

RPI 1102

Solicitação de exame técnico

#4.1

03/26/1991

RPI 1060

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