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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8100999

Type

Invention Patent

Filing

02/19/1981

Publication

-

Progress at the INPI

  1. Filing02/19/81
  2. Publication
  3. Examination01/11/83
  4. Allowance03/27/84
  5. Grant09/25/84
  6. Expired03/26/96

The letters patent expired on 03/26/1996: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 11/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

N. C. (pessoa física)

JP

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Inventors

H. K. (pessoa física)

S. O. (pessoa física)

T. K. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

11/27/1984

RPI 736

Concessão da patente

#16.1

09/25/1984

RPI 727

Deferimento

#9.1

03/27/1984

RPI 701

Solicitação de exame técnico

#4.1

01/11/1983

RPI 638

Carta-patente expirada

#21.1

03/26/1996

RPI 1321

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