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Official data from INPI

TRANSDUTOR DE CORRENTE-EM-TENSÃO.

PublicadaInvention Patent

Application data

Number

PI8800664

Type

Invention Patent

Filing

02/18/1988

Publication

10/04/1988

Progress at the INPI

  1. Filing02/18/88
  2. Publication10/04/88
  3. Examination01/02/91
  4. Allowance05/31/94
  5. Grant11/29/94
  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: 10/04/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E. C. (pessoa física)

US

W. C. (pessoa física)

US

See this company's full portfolio

Inventors

J. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

016.422 · 02/19/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/04/1988

RPI 937

Pedido de patente depositado

#2.1

05/10/1988

RPI 916

Carta-patente expirada

#21.1

Patente extinta em 18/02/2003

09/02/2008

RPI 1965

Pedido de licença compulsória

#20.1

12/19/1995

RPI 1307

Concessão da patente

#16.1

11/29/1994

RPI 1252

Notificação para pagamento de retribuição

#13.1

10/04/1994

RPI 1244

Deferimento

#9.1

05/31/1994

RPI 1226

Exigência - art. 36 da LPI

#6.1

09/21/1993

RPI 1190

Solicitação de exame técnico

#4.1

01/02/1991

RPI 1048

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