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Official data from INPI

INTERCAMBIADOR DE CALOR COMPRENDENDO TUBOS ASSOCIADOS A UMA CHAPA COLETORA

Em AnáliseInvention Patent

Application data

Number

PI8402760

Type

Invention Patent

Filing

06/09/1983

Publication

05/14/1985

Progress at the INPI

  1. Filing06/09/83
  2. Publication05/14/85
  3. Examination11/05/85
  4. Allowance08/11/87
  5. Grant03/29/88
  6. Terminated09/26/89

The patent was granted on 03/29/1988 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CHAUSSON USINES SA [FR]

Inventors

B. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

09/26/1989

RPI 988

Concessão da patente

#16.1

03/29/1988

RPI 910

Notificação para pagamento de retribuição

#13.1

12/01/1987

RPI 893

Deferimento

#9.1

08/11/1987

RPI 877

Exigência - art. 36 da LPI

#6.1

10/21/1986

RPI 835

Solicitação de exame técnico

#4.1

11/05/1985

RPI 785

Publicação do pedido de patente

#3.1

05/14/1985

RPI 760

Pedido de patente depositado

#2.1

08/14/1984

RPI 721

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