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Official data from INPI

ELEMENTO TROCADOR DE CALOR.

ConcedidaInvention Patent

Application data

Number

PI8103513

Type

Invention Patent

Filing

06/03/1981

Publication

02/24/1982

Progress at the INPI

  1. Filing06/03/81
  2. Publication02/24/82
  3. Examination06/29/82
  4. Allowance02/28/84
  5. Grant09/25/84
  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.

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Latest action published by the INPI: 09/25/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

B. A. (pessoa física)

DE

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Inventors

K. J. (pessoa física)

S. H. (pessoa física)

Technical data

IPC Classification

Priority claims

DE

P 30 21 091.4 · 06/04/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/25/1984

RPI 727

Notificação para pagamento de retribuição

#13.1

06/12/1984

RPI 712

Deferimento

#9.1

02/28/1984

RPI 697

Exigência - art. 36 da LPI

#6.1

09/13/1983

RPI 673

Solicitação de exame técnico

#4.1

06/29/1982

RPI 610

Publicação do pedido de patente

#3.1

02/24/1982

RPI 592

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

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