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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8102175

Type

Invention Patent

Filing

04/10/1981

Publication

12/01/1981

Progress at the INPI

  1. Filing04/10/81
  2. Publication12/01/81
  3. Examination01/10/84
  4. Allowance08/07/84
  5. Grant02/26/85
  6. Expired10/01/96

The letters patent expired on 10/01/1996: 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: 02/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Illinois Tool Works, Inc

US

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Inventors

O. R. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/26/1985

RPI 749

Notificação para pagamento de retribuição

#13.1

12/11/1984

RPI 738

Deferimento

#9.1

08/07/1984

RPI 720

Solicitação de exame técnico

#4.1

01/10/1984

RPI 690

Publicação do pedido de patente

#3.1

12/01/1981

RPI 580

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

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