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Official data from INPI

SISTEMA CONVERSOR ESTÁTICO E SISTEMA CONVERSOR DE MULTI-PULSOS QUE OPERAM ENTRE AS BARRAS OPOSTAS DAS RESPECTIVAS BARRAS CA E CC.

Arquivada/ExtintaInvention Patent

Application data

Number

PI9102391

Type

Invention Patent

Filing

06/07/1991

Publication

04/28/1992

Progress at the INPI

  1. Filing06/07/91
  2. Publication04/28/92
  3. Examination07/27/93
  4. Allowance09/22/98
  5. Grant02/23/99
  6. Expired06/04/13

The letters patent expired on 06/04/2013: 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: 06/04/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E. C. (pessoa física)

US

W. C. (pessoa física)

US

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Inventors

D. P. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

569.105 · 08/17/1990

US

674.815 · 03/22/1991

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 07/06/2011

06/04/2013

RPI 2213

Concessão da patente

#16.1

02/23/1999

RPI 1468

Deferimento

#9.1

09/22/1998

RPI 1448

14.1

12/05/1995

RPI 1305

Solicitação de exame técnico

#4.1

07/27/1993

RPI 1182

Publicação do pedido de patente

#3.1

04/28/1992

RPI 1117

Pedido de patente depositado

#2.1

03/03/1992

RPI 1109

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