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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8100465

Type

Invention Patent

Filing

01/28/1981

Publication

-

Progress at the INPI

  1. Filing01/28/81
  2. Publication
  3. Examination09/13/83
  4. Allowance05/22/84
  5. Grant11/27/84
  6. Expired03/19/96

The letters patent expired on 03/19/1996: 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: 11/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

International Business Machines Corporation. [us]

US

Inventors

B. R. (pessoa física)

F. A. (pessoa física)

F. A. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/27/1984

RPI 736

Notificação para pagamento de retribuição

#13.1

09/04/1984

RPI 724

Deferimento

#9.1

05/22/1984

RPI 709

Solicitação de exame técnico

#4.1

09/13/1983

RPI 673

Carta-patente expirada

#21.1

03/19/1996

RPI 1320

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