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Official data from INPI

BOCAL DE ALIMENTAÇÃO DE PLASMA PARA UM FORNO

PublicadaInvention Patent

Application data

Number

PI8802181

Type

Invention Patent

Filing

05/04/1988

Publication

12/06/1988

Progress at the INPI

  1. Filing05/04/88
  2. Publication12/06/88
  3. Examination04/02/91
  4. Allowance10/26/93
  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: 12/06/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. C. (pessoa física)

US

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Inventors

C. W. (pessoa física)

US

S. D. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

047,811 · 05/08/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/06/1988

RPI 946

Pedido de patente depositado

#2.1

09/27/1988

RPI 936

Carta-patente expirada

#21.1

Patente extinta em 04/05/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

05/31/1994

RPI 1226

Deferimento

#9.1

10/26/1993

RPI 1195

Exigência - art. 36 da LPI

#6.1

05/11/1993

RPI 1171

Solicitação de exame técnico

#4.1

04/02/1991

RPI 1061

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