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Official data from INPI

SEM TITULO

ConcedidaInvention Patent
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Application data

Number

PI8005415

Type

Invention Patent

Filing

08/27/1980

Publication

-
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Progress at the INPI

  1. Filing08/27/80
  2. Publication
  3. Examination
  4. Allowance01/06/87
  5. Grant08/25/87
  6. Expired09/26/95

The letters patent expired on 09/26/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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

Applicants and inventors

Applicants

Oxy Metal Industries Corporation

US

Inventors

W. W. (pessoa física)

Technical data

IPC Classification

C25D 3/12

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/25/1987

RPI 879

Notificação para pagamento de retribuição

#13.1

06/09/1987

RPI 868

Deferimento

#9.1

01/06/1987

RPI 846

Exigência - art. 36 da LPI

#6.1

02/26/1985

RPI 749

Exigência - art. 36 da LPI

#6.1

09/18/1984

RPI 726

Exigência - art. 36 da LPI

#6.1

01/03/1984

RPI 689

Carta-patente expirada

#21.1

09/26/1995

RPI 1295

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