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Official data from INPI

SISTEMA DE CALDEIRA INTEIRAMENTE SOLDADA DE UM UNICO CILINDRO

ConcedidaInvention Patent

Application data

Number

PI8302240

Type

Invention Patent

Filing

05/03/1982

Publication

01/03/1984

Progress at the INPI

  1. Filing05/03/82
  2. Publication01/03/84
  3. Examination03/04/86
  4. Allowance11/18/86
  5. Grant07/28/87
  6. Terminated02/18/92

The patent was granted on 07/28/1987 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: 07/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BABCOCK & WILCOX CO [US]

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Inventors

L. E. (pessoa física)

S. P. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/28/1987

RPI 875

Notificação para pagamento de retribuição

#13.1

03/31/1987

RPI 858

Deferimento

#9.1

11/18/1986

RPI 839

Solicitação de exame técnico

#4.1

03/04/1986

RPI 802

Republicação - classificação IPC

#15.11

10/23/1984

RPI 731

Publicação do pedido de patente

#3.1

01/03/1984

RPI 689

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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