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Official data from INPI

caldeira elétrica de produção de vapor.

ConcedidaInvention Patent

Application data

Number

PI8400211

Type

Invention Patent

Filing

01/18/1984

Publication

08/21/1984

Progress at the INPI

  1. Filing01/18/84
  2. Publication08/21/84
  3. Examination04/15/86
  4. Allowance02/17/87
  5. Grant08/25/87
  6. Expired07/08/08

The letters patent expired on 07/08/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 08/25/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alsthom-Atlantique

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Inventors

V. B. (pessoa física)

Technical data

IPC Classification

Priority claims

FR

83 00 761 · 01/19/1983

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

04/15/1986

RPI 808

Publicação do pedido de patente

#3.1

08/21/1984

RPI 722

Pedido de patente depositado

#2.1

03/20/1984

RPI 700

Carta-patente expirada

#21.1

Patente extinta em 18/01/99

07/08/2008

RPI 1957

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