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Official data from INPI

SISTEMA DE SUPERVISIONAMENTO

Em AnáliseInvention Patent

Application data

Number

PI8001522

Type

Invention Patent

Filing

03/16/1979

Publication

-

Progress at the INPI

  1. Filing03/16/79
  2. Publication
  3. Examination11/03/82
  4. Allowance09/27/83
  5. Grant03/27/84
  6. Terminated09/26/89

The patent was granted on 03/27/1984 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MINNESOTA MINING & MFG

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Inventors

W. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

09/26/1989

RPI 988

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

01/17/1984

RPI 691

Deferimento

#9.1

09/27/1983

RPI 675

Exigência - art. 36 da LPI

#6.1

05/03/1983

RPI 654

Solicitação de exame técnico

#4.1

11/03/1982

RPI 628

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