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Official data from INPI

Trocador de calor à placas.

ConcedidaInvention Patent

Application data

Number

PI8102637

Type

Invention Patent

Filing

04/29/1981

Publication

01/26/1982

Progress at the INPI

  1. Filing04/29/81
  2. Publication01/26/82
  3. Examination03/13/84
  4. Allowance05/07/85
  5. Grant11/26/85
  6. Expired10/01/96

The letters patent expired on 10/01/1996: 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: 11/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. A. (pessoa física)

SE

Inventors

J. K. (pessoa física)

Technical data

IPC Classification

Priority claims

SE

8003294-9 · 04/30/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/26/1985

RPI 788

Notificação para pagamento de retribuição

#13.1

08/27/1985

RPI 775

Deferimento

#9.1

05/07/1985

RPI 759

Exigência - art. 36 da LPI

#6.1

09/25/1984

RPI 727

Solicitação de exame técnico

#4.1

03/13/1984

RPI 699

Publicação do pedido de patente

#3.1

01/26/1982

RPI 588

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

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