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Official data from INPI

ELETRODO DE USINAGEM POR DESCARGA ELETRICA E PROCESSO PARA PRODUZIR O MESMO

ConcedidaInvention Patent

Application data

Number

PI8100693

Type

Invention Patent

Filing

02/06/1980

Publication

-

Progress at the INPI

  1. Filing02/06/80
  2. Publication
  3. Examination09/20/83
  4. Allowance09/18/84
  5. Grant03/26/85
  6. Terminated08/23/94

The patent was granted on 03/26/1985 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: 03/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MINNESOTA MINING & MFG

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Inventors

H. T. (pessoa física)

S. J. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/26/1985

RPI 753

Notificação para pagamento de retribuição

#13.1

01/15/1985

RPI 743

Republicação - classificação IPC

#15.11

12/18/1984

RPI 739

Deferimento

#9.1

09/18/1984

RPI 726

Solicitação de exame técnico

#4.1

09/20/1983

RPI 674

Anuidade - prazo legal encerrado

#18.2

08/23/1994

RPI 1238

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