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Official data from INPI

Processo e aparelho para regular a proporção de gás combustível para ar em um aparelho aquecedor

Arquivada/ExtintaInvention Patent

Application data

Number

PI9102860

Type

Invention Patent

Filing

07/08/1991

Publication

04/28/1992

Progress at the INPI

  1. Filing07/08/91
  2. Publication04/28/92
  3. Examination09/01/92
  4. Allowance06/11/96
  5. Grant04/29/97
  6. Expired06/29/10

The letters patent expired on 06/29/2010: 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: 06/29/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. C. (pessoa física)

US

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Inventors

C. R. (pessoa física)

US

D. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

07/557,355 · 08/20/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 08/07/2006

06/29/2010

RPI 2060

Concessão da patente

#16.1

04/29/1997

RPI 1378

Deferimento

#9.1

06/11/1996

RPI 1332

Solicitação de exame técnico

#4.1

09/01/1992

RPI 1135

Publicação do pedido de patente

#3.1

04/28/1992

RPI 1117

Pedido de patente depositado

#2.1

03/24/1992

RPI 1112

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