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Official data from INPI

APERFEICOAMENTO EM PROCESSO DEPOSICAO DE LIGAS DE ALUMINIO

ConcedidaInvention Patent

Application data

Number

PI7804586

Type

Invention Patent

Filing

07/14/1978

Publication

-

Progress at the INPI

  1. Filing07/14/78
  2. Publication
  3. Examination
  4. Allowance09/08/82
  5. Grant05/31/83
  6. Expired11/30/93

The letters patent expired on 11/30/1993: 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: 05/31/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

METAL LEVE SA IND COM

Inventors

A. M. (pessoa física)

M. D. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1983

RPI 658

Notificação para pagamento de retribuição

#13.1

01/11/1983

RPI 638

Deferimento

#9.1

09/08/1982

RPI 620

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C23C 7/00; B05D 3/00.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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