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Official data from INPI

RESFRIADOR DE GAS DE SINTESE E CALDEIRA ECONOMIZADORA A CALOR RESIDUAL

Em AnáliseInvention Patent

Application data

Number

PI8108218

Type

Invention Patent

Filing

02/12/1981

Publication

10/05/1982

Progress at the INPI

  1. Filing02/12/81
  2. Publication10/05/82
  3. Examination12/27/83
  4. Allowance02/12/85
  5. Grant08/27/85
  6. Terminated11/16/88

The patent was granted on 08/27/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 11/16/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TEXACO DEVELOPMENT CORP [US]

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Inventors

G. J. (pessoa física)

K. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

11/16/1988

RPI 943

Concessão da patente

#16.1

08/27/1985

RPI 775

Notificação para pagamento de retribuição

#13.1

05/28/1985

RPI 762

Deferimento

#9.1

02/12/1985

RPI 747

Exigência - art. 36 da LPI

#6.1

07/10/1984

RPI 716

Solicitação de exame técnico

#4.1

12/27/1983

RPI 688

Publicação do pedido de patente

#3.1

10/05/1982

RPI 624

Pedido de patente depositado

#2.1

02/09/1982

RPI 590

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