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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI8101024

Type

Invention Patent

Filing

02/20/1981

Publication

-

Progress at the INPI

  1. Filing02/20/81
  2. Publication
  3. Examination
  4. Allowance02/14/84
  5. Grant09/25/84
  6. Expired03/26/96

The letters patent expired on 03/26/1996: 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: 07/16/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Metalurgica Detroit S/A.

SP, BR

See this company's full portfolio

Inventors

P. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

07/16/1985

RPI 769

Concessão da patente

#16.1

09/25/1984

RPI 727

Notificação para pagamento de retribuição

#13.1

06/05/1984

RPI 711

Deferimento

#9.1

02/14/1984

RPI 695

Exigência - art. 36 da LPI

#6.1

08/16/1983

RPI 669

Carta-patente expirada

#21.1

03/26/1996

RPI 1321

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