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Official data from INPI

APARELHO E PROCESSO DE COMBUSTAO PARA SOLIDOS PARTICULADOS QUE CONTEM UM COMPONENTE COMBUSTIVEL

ConcedidaInvention Patent

Application data

Number

PI8402911

Type

Invention Patent

Filing

07/28/1983

Publication

05/21/1985

Progress at the INPI

  1. Filing07/28/83
  2. Publication05/21/85
  3. Examination06/30/87
  4. Allowance03/15/88
  5. Grant12/27/88
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 12/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PEDCO INC [US]

Inventors

R. M. (pessoa física)

R. A. (pessoa física)

S. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/27/1988

RPI 949

Notificação para pagamento de retribuição

#13.1

07/19/1988

RPI 926

Deferimento

#9.1

03/15/1988

RPI 908

Solicitação de exame técnico

#4.1

06/30/1987

RPI 871

Publicação do pedido de patente

#3.1

05/21/1985

RPI 761

Pedido de patente depositado

#2.1

08/14/1984

RPI 721

Carta-patente expirada

#21.1

Patente extinta em 14/06/99

08/19/2008

RPI 1963

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