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Official data from INPI

REGISTRO DE GÁS APERFEIÇOADO PARA FORNOS E FOGÕES

ConcedidaInvention Patent

Application data

Number

PI8402959

Type

Invention Patent

Filing

06/18/1984

Publication

01/21/1986

Progress at the INPI

  1. Filing06/18/84
  2. Publication01/21/86
  3. Examination08/05/86
  4. Allowance11/10/87
  5. Grant06/28/88
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 06/28/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Imar Indústria Metalúrgica Ltda

SP, BR

See this company's full portfolio

Inventors

J. A. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1988

RPI 923

Notificação para pagamento de retribuição

#13.1

03/01/1988

RPI 906

Deferimento

#9.1

11/10/1987

RPI 890

Solicitação de exame técnico

#4.1

08/05/1986

RPI 824

Publicação do pedido de patente

#3.1

01/21/1986

RPI 796

Pedido de patente depositado

#2.1

08/21/1984

RPI 722

Carta-patente expirada

#21.1

Patente extinta em 18/06/99

07/08/2008

RPI 1957

136

12/27/1994

RPI 1256

22.10

09/20/1994

RPI 1242

18.8

03/01/1994

RPI 1213

22.2

03/01/1994

RPI 1213

18.1

04/06/1993

RPI 1166

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