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Official data from INPI

SISTEMA CONVERSOR CA/CC

PublicadaInvention Patent

Application data

Number

PI8901099

Type

Invention Patent

Filing

03/09/1989

Publication

10/31/1989

Progress at the INPI

  1. Filing03/09/89
  2. Publication10/31/89
  3. Examination12/10/91
  4. Allowance11/29/94
  5. Grant06/27/95
  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: 10/31/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. C. (pessoa física)

US

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Inventors

C. S. (pessoa física)

US

T. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

168.062 · 03/14/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/31/1989

RPI 993

Pedido de patente depositado

#2.1

04/25/1989

RPI 966

Carta-patente expirada

#21.1

Patente extinta em 09/03/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

06/27/1995

RPI 1282

Notificação para pagamento de retribuição

#13.1

04/04/1995

RPI 1270

Deferimento

#9.1

11/29/1994

RPI 1252

Solicitação de exame técnico

#4.1

12/10/1991

RPI 1097

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