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Official data from INPI

AQUECEDORES ELÉTRICOS DE PASSAGEM APERFEIÇOADOS

Em AnáliseInvention Patent
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Application data

Number

PI8802162

Type

Invention Patent

Filing

04/29/1988

Publication

04/11/1989
View on INPI

Progress at the INPI

  1. Filing04/29/88
  2. Publication04/11/89
  3. Examination11/07/89
  4. Allowance11/16/93
  5. Grant06/28/94
  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.

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Latest action published by the INPI: 11/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. S. (pessoa física)

SP, BR

Inventors

A. S. (pessoa física)

BR

Technical data

IPC Classification

H05B 3/40

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/07/1989

RPI 994

Publicação antecipada

#3.2

04/11/1989

RPI 964

Pedido de patente depositado

#2.1

09/20/1988

RPI 935

Carta-patente expirada

#21.1

Patente extinta em 29/04/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

06/28/1994

RPI 1230

Notificação para pagamento de retribuição

#13.1

03/29/1994

RPI 1217

Notificação para pagamento de retribuição

#13.1

03/22/1994

RPI 1216

Deferimento

#9.1

11/16/1993

RPI 1198

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