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Official data from INPI

REDE HELICOIDAL.

ConcedidaInvention Patent

Application data

Number

PI8207738

Type

Invention Patent

Filing

06/02/1982

Publication

05/10/1983

Progress at the INPI

  1. Filing06/02/82
  2. Publication05/10/83
  3. Examination10/04/83
  4. Allowance11/20/84
  5. Grant05/28/85
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 05/28/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

G. N. (pessoa física)

Inventors

N. [. (pessoa física)

Technical data

IPC Classification

Priority claims

US

270.659 · 06/05/1981

US

82/00747 · 06/02/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/28/1985

RPI 762

Notificação para pagamento de retribuição

#13.1

03/26/1985

RPI 753

Deferimento

#9.1

11/20/1984

RPI 735

Exigência - art. 36 da LPI

#6.1

04/03/1984

RPI 702

Solicitação de exame técnico

#4.1

10/04/1983

RPI 676

Notificação de entrada na fase nacional - PCT

#1.3

05/10/1983

RPI 655

Carta-patente expirada

#21.1

Patente extinta em 02/06/97

07/01/2008

RPI 1956

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