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Official data from INPI

SOPRADOR DE FULIGEM

ConcedidaInvention Patent

Application data

Number

PI7903697

Type

Invention Patent

Filing

09/26/1978

Publication

-

Progress at the INPI

  1. Filing09/26/78
  2. Publication
  3. Examination
  4. Allowance05/04/82
  5. Grant11/30/82
  6. Expired04/04/95

The letters patent expired on 04/04/1995: 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: 11/30/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BABCOCK & WILCOX CO

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Inventors

E. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/30/1982

RPI 632

Notificação para pagamento de retribuição

#13.1

09/08/1982

RPI 620

Deferimento

#9.1

05/04/1982

RPI 602

Carta-patente expirada

#21.1

04/04/1995

RPI 1270

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