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Official data from INPI

QUEIMADOR OXI-GÁS POBRE COM OPÇÃO DE REFRIGERAÇÃO E RESPECTIVO PROCESSO DE QUEIMA

Em AnáliseInvention Patent

Application data

Number

PI8700364

Type

Invention Patent

Filing

01/28/1987

Publication

10/06/1987

Progress at the INPI

  1. Filing01/28/87
  2. Publication10/06/87
  3. Examination02/02/88
  4. Allowance06/04/91
  5. Grant11/26/91
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 02/02/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Air Products Gases Industriais Ltda

SP, BR

Inventors

D. C. (pessoa física)

BR

P. F. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

02/02/1988

RPI 902

Publicação antecipada

#3.2

10/06/1987

RPI 885

Pedido de patente depositado

#2.1

05/26/1987

RPI 866

Carta-patente expirada

#21.1

Patente extinta em 28/01/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

11/26/1991

RPI 1095

Deferimento

#9.1

06/04/1991

RPI 1070

Exigência - art. 36 da LPI

#6.1

01/09/1990

RPI 1001

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