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Official data from INPI

CONDUTO DE AÇO INOXIDÁVEL CONVOLUTO, CONDUTO CONVOLUTO E PROCESSO DE AFASTAR GASES AQUECIDOS DE UM MOTOR DE COMBUSTÃO INTERNA.

PublicadaInvention Patent

Application data

Number

PI8803226

Type

Invention Patent

Filing

06/29/1988

Publication

01/17/1989

Progress at the INPI

  1. Filing06/29/88
  2. Publication01/17/89
  3. Examination04/16/91
  4. Allowance11/03/93
  5. Grant05/31/94
  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.

Talk to a specialist

Latest action published by the INPI: 01/17/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

T. C. (pessoa física)

US

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Inventors

H. W. (pessoa física)

US

J. L. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

068.638 · 06/30/1987

US

112.655 · 10/01/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

01/17/1989

RPI 952

Pedido de patente depositado

#2.1

11/29/1988

RPI 945

Carta-patente expirada

#21.1

Patente extinta em 29/06/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

05/31/1994

RPI 1226

Deferimento

#9.1

11/03/1993

RPI 1196

Exigência - art. 36 da LPI

#6.1

08/04/1992

RPI 1131

Solicitação de exame técnico

#4.1

04/16/1991

RPI 1063

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