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Official data from INPI

AÇO RÁPIDO TIPO TUNGSTÊNIO, CONTENDO VANÁDIO E PRODUZIDO PARA METALURGIA DO PÓ.

Em AnáliseInvention Patent

Application data

Number

PI7908363

Type

Invention Patent

Filing

12/20/1979

Publication

-

Progress at the INPI

  1. Filing12/20/79
  2. Publication
  3. Examination
  4. Allowance05/15/84
  5. Grant11/27/84
  6. Expired05/02/95

The letters patent expired on 05/02/1995: 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: 09/03/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Crucible Inc.

Inventors

D. F. (pessoa física)

H. W. (pessoa física)

S. W. (pessoa física)

Technical data

IPC Classification

Priority claims

US

035.652 · 05/03/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

09/03/1985

RPI 776

20.4

08/27/1985

RPI 775

Concessão da patente

#16.1

11/27/1984

RPI 736

Notificação para pagamento de retribuição

#13.1

09/04/1984

RPI 724

Deferimento

#9.1

05/15/1984

RPI 708

Exigência - art. 36 da LPI

#6.1

11/22/1983

RPI 683

Carta-patente expirada

#21.1

05/02/1995

RPI 1274

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