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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8000171

Type

Invention Patent

Filing

01/10/1980

Publication

-

Progress at the INPI

  1. Filing01/10/80
  2. Publication
  3. Examination10/13/82
  4. Allowance12/06/83
  5. Grant05/29/84
  6. Terminated11/03/93

The patent was granted on 05/29/1984 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: 09/01/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Minnesota Mining and Manufacturing Company

US

See this company's full portfolio

Inventors

C. L. (pessoa física)

S. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Retificação

#15.3

09/01/1987

RPI 880

Concessão da patente

#16.1

05/29/1984

RPI 710

Notificação para pagamento de retribuição

#13.1

03/27/1984

RPI 701

Deferimento

#9.1

12/06/1983

RPI 685

Exigência - art. 36 da LPI

#6.1

06/14/1983

RPI 660

Solicitação de exame técnico

#4.1

10/13/1982

RPI 625

Anuidade - prazo legal encerrado

#18.2

11/03/1993

RPI 1196

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