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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI7902247

Type

Invention Patent

Filing

04/11/1979

Publication

-

Progress at the INPI

  1. Filing04/11/79
  2. Publication
  3. Examination02/09/82
  4. Allowance08/24/82
  5. Grant03/29/83
  6. Terminated07/20/93

The patent was granted on 03/29/1983 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: 03/29/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Minnesota Mining and Manufacturing Company

US

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Inventors

B. D. (pessoa física)

N. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/29/1983

RPI 649

Notificação para pagamento de retribuição

#13.1

01/11/1983

RPI 638

Deferimento

#9.1

08/24/1982

RPI 618

Solicitação de exame técnico

#4.1

02/09/1982

RPI 590

Anuidade - prazo legal encerrado

#18.2

07/20/1993

RPI 1181

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