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Official data from INPI

PROCESSO PARA QUEIMAR COMBUSTÍVEL GASOSO E OXIDANTE; APARELHO QUEIMADOR PARA EMPREGO COM OXIGÊNIO PURO OU AR ENRIQUECIDO DE OXIGÊNIO COMO O OXIDANTE

Prazo de SigiloInvention Patent

Application data

Number

PI8901118

Type

Invention Patent

Filing

03/10/1989

Publication

08/28/1990

Progress at the INPI

  1. Filing03/10/89
  2. Publication08/28/90
  3. Examination11/12/91
  4. Allowance09/21/93
  5. Grant04/26/94
  6. Expired12/15/09

The letters patent expired on 12/15/2009: 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: 04/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. C. (pessoa física)

US

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Inventors

J. A. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

190.396 · 05/05/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

04/25/1989

RPI 966

Carta-patente expirada

#21.1

Patente extinta em 10/03/2004

12/15/2009

RPI 2032

Pedido de licença compulsória

#20.1

11/22/1994

RPI 1251

20.4

11/08/1994

RPI 1249

Concessão da patente

#16.1

04/26/1994

RPI 1221

Deferimento

#9.1

09/21/1993

RPI 1190

Solicitação de exame técnico

#4.1

11/12/1991

RPI 1093

Publicação do pedido de patente

#3.1

08/28/1990

RPI 1030

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