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Official data from INPI

CALDEIRA A LEITO FLUIDIZADO.

ConcedidaInvention Patent

Application data

Number

PI8302177

Type

Invention Patent

Filing

04/27/1983

Publication

12/27/1983

Progress at the INPI

  1. Filing04/27/83
  2. Publication12/27/83
  3. Examination04/22/86
  4. Allowance02/17/87
  5. Grant08/25/87
  6. Terminated02/18/92

The patent was granted on 08/25/1987 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: 08/25/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. I. (pessoa física)

US

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Inventors

L. M. (pessoa física)

M. E. (pessoa física)

Technical data

IPC Classification

Priority claims

US

372.853 · 04/28/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/25/1987

RPI 879

Deferimento

#9.1

02/17/1987

RPI 852

Solicitação de exame técnico

#4.1

04/22/1986

RPI 809

Publicação do pedido de patente

#3.1

12/27/1983

RPI 688

Pedido de patente depositado

#2.1

06/14/1983

RPI 660

Anuidade - prazo legal encerrado

#18.2

02/18/1992

RPI 1107

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