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Official data from INPI

ELEMENTO AQUECEDOR E PROCESSO PARA A PRODUÇÃO DO MESMO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9103944

Type

Invention Patent

Filing

09/13/1991

Publication

05/26/1992

Progress at the INPI

  1. Filing09/13/91
  2. Publication05/26/92
  3. Examination09/29/92
  4. Allowance08/11/98
  5. Grant12/29/98
  6. Expired06/11/13

The letters patent expired on 06/11/2013: 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: 06/11/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Matsushita Electric Industrial Co., Ltd

JP

See this company's full portfolio

Inventors

K. Y. (pessoa física)

JP

M. M. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

244.357 · 09/14/1990

JP

259.669 · 09/27/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinte em 13/09/2011

06/11/2013

RPI 2214

Concessão da patente

#16.1

12/29/1998

RPI 1460

Deferimento

#9.1

08/11/1998

RPI 1442

Solicitação de exame técnico

#4.1

09/29/1992

RPI 1139

Publicação do pedido de patente

#3.1

05/26/1992

RPI 1121

Pedido de patente depositado

#2.1

10/22/1991

RPI 1090

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