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Official data from INPI

MÉTODO PARA GERAR ENERGIA

ConcedidaInvention Patent

Application data

Number

PI8504116

Type

Invention Patent

Filing

08/28/1985

Publication

06/17/1986

Progress at the INPI

  1. Filing08/28/85
  2. Publication06/17/86
  3. Examination10/29/86
  4. Allowance12/20/88
  5. Grant09/26/89
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. K. (pessoa física)

US

Inventors

A. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

665.042 · 10/26/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

04/25/1989

RPI 966

Deferimento

#9.1

12/20/1988

RPI 948

Solicitação de exame técnico

#4.1

10/29/1986

RPI 836

Publicação do pedido de patente

#3.1

06/17/1986

RPI 817

Pedido de patente depositado

#2.1

10/29/1985

RPI 784

Carta-patente expirada

#21.1

Patente extinta em 28/08/2000

07/15/2008

RPI 1958

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