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Official data from INPI

processo para a produção de uma liga de ferrotungstenio.

Em AnáliseInvention Patent

Application data

Number

PI7800847

Type

Invention Patent

Filing

02/13/1978

Publication

-

Progress at the INPI

  1. Filing02/13/78
  2. Publication
  3. Examination
  4. Allowance08/16/83
  5. Grant02/28/84
  6. Terminated06/14/88

The patent was granted on 02/28/1984 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: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Amax Inc.

See this company's full portfolio

Inventors

D. B. (pessoa física)

Technical data

IPC Classification

Priority claims

US

768.386 · 02/14/1977

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/14/1988

RPI 921

Concessão da patente

#16.1

02/28/1984

RPI 697

Notificação para pagamento de retribuição

#13.1

12/06/1983

RPI 685

Deferimento

#9.1

08/16/1983

RPI 669

Exigência - art. 36 da LPI

#6.1

11/16/1982

RPI 630

6.2

12/22/1981

RPI 583

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