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Official data from INPI

DISPOSITIVO COMUTADOR ELÉTRICO.

ConcedidaInvention Patent

Application data

Number

PI8103381

Type

Invention Patent

Filing

05/29/1981

Publication

02/16/1982

Progress at the INPI

  1. Filing05/29/81
  2. Publication02/16/82
  3. Examination03/13/84
  4. Allowance02/12/85
  5. Grant08/27/85
  6. Expired10/08/96

The letters patent expired on 10/08/1996: 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: 08/27/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. C. (pessoa física)

US

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Inventors

D. B. (pessoa física)

G. K. (pessoa física)

H. J. (pessoa física)

Technical data

IPC Classification

Priority claims

US

155.808 · 05/30/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/27/1985

RPI 775

Notificação para pagamento de retribuição

#13.1

05/28/1985

RPI 762

Deferimento

#9.1

02/12/1985

RPI 747

Exigência - art. 36 da LPI

#6.1

09/18/1984

RPI 726

Solicitação de exame técnico

#4.1

03/13/1984

RPI 699

Publicação do pedido de patente

#3.1

02/16/1982

RPI 591

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

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