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Official data from INPI

PROCESSO DE FABRICACAO DE FERROESPONJA

ConcedidaInvention Patent

Application data

Number

PI8101097

Type

Invention Patent

Filing

02/23/1981

Publication

10/19/1982

Progress at the INPI

  1. Filing02/23/81
  2. Publication10/19/82
  3. Examination02/16/83
  4. Allowance04/08/86
  5. Grant10/29/86
  6. Terminated08/23/94

The patent was granted on 10/29/1986 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: 10/29/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SKF STEEL ENG AB [SE]

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Inventors

S. S. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/29/1986

RPI 836

Notificação para pagamento de retribuição

#13.1

08/12/1986

RPI 825

Deferimento

#9.1

04/08/1986

RPI 807

Conhecimento de parecer técnico

#7.1

10/16/1984

RPI 730

Solicitação de exame técnico

#4.1

02/16/1983

RPI 643

Publicação do pedido de patente

#3.1

10/19/1982

RPI 626

Anuidade - prazo legal encerrado

#18.2

08/23/1994

RPI 1238

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