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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8205679

Type

Invention Patent

Filing

09/29/1982

Publication

12/14/1982

Progress at the INPI

  1. Filing09/29/82
  2. Publication12/14/82
  3. Examination04/05/83
  4. Allowance05/07/85
  5. Grant10/29/85
  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: 10/29/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Perkron

SP, BR

Inventors

L. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/29/1985

RPI 784

Notificação para pagamento de retribuição

#13.1

08/27/1985

RPI 775

Deferimento

#9.1

05/07/1985

RPI 759

Solicitação de exame técnico

#4.1

04/05/1983

RPI 650

Publicação antecipada

#3.2

12/14/1982

RPI 634

Pedido de patente depositado

#2.1

11/23/1982

RPI 631

Carta-patente expirada

#21.1

Patente extinta em 29/09/97

07/01/2008

RPI 1956

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