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Official data from INPI

TROCADOR DE CALOR EVAPORATIVO DE TIRAGEM FORÇADA

ConcedidaInvention Patent

Application data

Number

PI8200290

Type

Invention Patent

Filing

01/21/1982

Publication

11/23/1982

Progress at the INPI

  1. Filing01/21/82
  2. Publication11/23/82
  3. Examination02/05/85
  4. Allowance07/08/86
  5. Grant02/03/87
  6. Terminated11/15/94

The patent was granted on 02/03/1987 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 02/03/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Baltimore Aircoil Company Inc

US

See this company's full portfolio

Inventors

R. J. (pessoa física)

US

R. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

227,574 · 01/22/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/03/1987

RPI 850

Notificação para pagamento de retribuição

#13.1

11/04/1986

RPI 837

Deferimento

#9.1

07/08/1986

RPI 820

Exigência - art. 36 da LPI

#6.1

10/15/1985

RPI 782

Solicitação de exame técnico

#4.1

02/05/1985

RPI 746

Publicação do pedido de patente

#3.1

11/23/1982

RPI 631

Pedido de patente depositado

#2.1

03/16/1982

RPI 595

Anuidade - prazo legal encerrado

#18.2

11/15/1994

RPI 1250

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