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Official data from INPI

METODO DE COMUNICACAO DE DADOS

ConcedidaInvention Patent

Application data

Number

PI7800436

Type

Invention Patent

Filing

01/25/1977

Publication

-

Progress at the INPI

  1. Filing01/25/77
  2. Publication
  3. Examination
  4. Allowance07/19/83
  5. Grant12/27/83
  6. Expired07/20/93

The letters patent expired on 07/20/1993: 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: 12/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

IBM

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Inventors

B. W. (pessoa física)

G. R. (pessoa física)

P. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/27/1983

RPI 688

Notificação para pagamento de retribuição

#13.1

11/16/1983

RPI 682

Republicação - classificação IPC

#15.11

09/06/1983

RPI 672

Deferimento

#9.1

07/19/1983

RPI 665

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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