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Official data from INPI

APERFEIÇOAMENTOS EM OU RELATIVOS A PORTA DE ENTRADA E/OU SAÍDA DE FORNOS DE ALVENARIA INTERMITENTES DE CARVOEJAMENTO

Em AnáliseInvention Patent

Application data

Number

PI8705270

Type

Invention Patent

Filing

10/05/1987

Publication

04/25/1989

Progress at the INPI

  1. Filing10/05/87
  2. Publication04/25/89
  3. Examination10/31/89
  4. Allowance08/15/95
  5. Grant03/26/96
  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: 10/31/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

L. G. (pessoa física)

MG, BR

Inventors

L. G. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/31/1989

RPI 993

Publicação do pedido de patente

#3.1

04/25/1989

RPI 966

Pedido de patente depositado

#2.1

12/22/1987

RPI 896

Carta-patente expirada

#21.1

Patente extinta em 05/10/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

03/26/1996

RPI 1321

Deferimento

#9.1

08/15/1995

RPI 1289

Exigência - art. 36 da LPI

#6.1

10/04/1994

RPI 1244

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