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Official data from INPI

AQUECEDOR PARA ÁGUA.

ConcedidaInvention Patent

Application data

Number

PI8104293

Type

Invention Patent

Filing

07/03/1981

Publication

02/16/1983

Progress at the INPI

  1. Filing07/03/81
  2. Publication02/16/83
  3. Examination08/02/83
  4. Allowance05/07/85
  5. Grant12/31/85
  6. Expired10/08/96

The letters patent expired on 10/08/1996: 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: 12/31/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cardal Eletro Metalúrgica Ltda.

SP, BR

Inventors

C. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

08/27/1985

RPI 775

Deferimento

#9.1

05/07/1985

RPI 759

8.1

02/26/1985

RPI 749

Exigência - art. 36 da LPI

#6.1

08/14/1984

RPI 721

Conhecimento de parecer técnico

#7.1

02/28/1984

RPI 697

Solicitação de exame técnico

#4.1

08/02/1983

RPI 667

Publicação do pedido de patente

#3.1

02/16/1983

RPI 643

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

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