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Official data from INPI

DISPOSITIVO INDICADOR AUTOMÁTICO DE ADULTERAÇÃO DE COMBUSTÍVEL LÍQUIDO.

ConcedidaInvention Patent
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Application data

Number

PI8102761

Type

Invention Patent

Filing

04/08/1981

Publication

11/30/1982
View on INPI

Progress at the INPI

  1. Filing04/08/81
  2. Publication11/30/82
  3. Examination06/07/83
  4. Allowance11/03/87
  5. Grant03/29/88
  6. Expired10/01/96

The letters patent expired on 10/01/1996: 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: 03/29/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Lewe Industrial - Tecnologia e Pesquisas Ltda.

MG, BR

Inventors

A. S. (pessoa física)

Technical data

IPC Classification

B60S 5/02B67D 99/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/29/1988

RPI 910

100

11/03/1987

RPI 889

120

06/16/1987

RPI 869

14.1

09/23/1986

RPI 831

Petição de recurso

#12.2

04/30/1985

RPI 758

Petição de recurso

#12.2

03/19/1985

RPI 752

8.1

02/12/1985

RPI 747

Indeferimento

#9.2

08/14/1984

RPI 721

Solicitação de exame técnico

#4.1

06/07/1983

RPI 659

Publicação do pedido de patente

#3.1

11/30/1982

RPI 632

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: B67D 5/00; B60S 5/02.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

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