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Official data from INPI

APERFEIÇOAMENTO EM SISTEMA DE CONVERSÃO PARA USO DE DUPLO COMBUSTÍVEL EM MOTO RES TURBOALIMENTADOS

PublicadaInvention Patent

Application data

Number

PI8800203

Type

Invention Patent

Filing

01/21/1988

Publication

09/05/1989

Progress at the INPI

  1. Filing01/21/88
  2. Publication09/05/89
  3. Examination05/22/90
  4. Allowance10/22/91
  5. Grant09/29/92
  6. Expired09/02/08

The letters patent expired on 09/02/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 09/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Petróleo Brasileiro S/A - Petrobrás

RJ, BR

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Inventors

C. M. (pessoa física)

BR

L. L. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

09/05/1989

RPI 985

Pedido de patente depositado

#2.1

05/31/1988

RPI 919

Carta-patente expirada

#21.1

Patente extinta em 21/01/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

09/29/1992

RPI 1139

Notificação para pagamento de retribuição

#13.1

03/03/1992

RPI 1109

Deferimento

#9.1

10/22/1991

RPI 1090

Solicitação de exame técnico

#4.1

05/22/1990

RPI 1019

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