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Official data from INPI

BUCHA EXPANSIVA

ConcedidaInvention Patent

Application data

Number

PI8000187

Type

Invention Patent

Filing

01/12/1979

Publication

-

Progress at the INPI

  1. Filing01/12/79
  2. Publication
  3. Examination
  4. Allowance12/06/83
  5. Grant05/29/84
  6. Expired05/16/95

The letters patent expired on 05/16/1995: 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: 05/29/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

T. W. (pessoa física)

Inventors

R. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

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

06/07/1983

RPI 659

Carta-patente expirada

#21.1

05/16/1995

RPI 1276

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