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Official data from INPI

SEM TITULO

Concessão AnuladaInvention Patent

Application data

Number

PI8005692

Type

Invention Patent

Filing

09/05/1980

Publication

-

Progress at the INPI

  1. Filing09/05/80
  2. Publication
  3. Examination
  4. Allowance11/29/83
  5. Grant05/29/84
  6. Expired11/07/95

The letters patent expired on 11/07/1995: 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: 08/21/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NHK SPRING CO LTD [JP]

Inventors

A. O. (pessoa física)

K. I. (pessoa física)

T. S. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

16.3

08/21/1984

RPI 722

Concessão da patente

#16.1

05/29/1984

RPI 710

Notificação para pagamento de retribuição

#13.1

03/20/1984

RPI 700

Deferimento

#9.1

11/29/1983

RPI 684

Carta-patente expirada

#21.1

11/07/1995

RPI 1301

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