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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8008307

Type

Invention Patent

Filing

12/18/1980

Publication

-

Progress at the INPI

  1. Filing12/18/80
  2. Publication
  3. Examination08/30/83
  4. Allowance11/13/84
  5. Grant05/28/85
  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: 05/28/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

International Business Machines Corporation. [us]

US

Inventors

K. W. (pessoa física)

M. V. (pessoa física)

R. J. (pessoa física)

S. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/28/1985

RPI 762

Deferimento

#9.1

11/13/1984

RPI 734

Exigência - art. 36 da LPI

#6.1

01/24/1984

RPI 692

Solicitação de exame técnico

#4.1

08/30/1983

RPI 671

Carta-patente expirada

#21.1

03/19/1996

RPI 1320

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