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Official data from INPI

CHAVE OU COMUTADOR DE NÍVEL.

ConcedidaInvention Patent

Application data

Number

PI8006493

Type

Invention Patent

Filing

10/08/1980

Publication

06/15/1982

Progress at the INPI

  1. Filing10/08/80
  2. Publication06/15/82
  3. Examination04/03/84
  4. Allowance12/17/85
  5. Grant06/24/86
  6. Expired11/14/95

The letters patent expired on 11/14/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 06/24/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

F. M. (pessoa física)

DE

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Inventors

M. F. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/24/1986

RPI 818

Notificação para pagamento de retribuição

#13.1

04/22/1986

RPI 809

Deferimento

#9.1

12/17/1985

RPI 791

Exigência - art. 36 da LPI

#6.1

05/14/1985

RPI 760

Exigência - art. 36 da LPI

#6.1

09/25/1984

RPI 727

Solicitação de exame técnico

#4.1

04/03/1984

RPI 702

Publicação do pedido de patente

#3.1

06/15/1982

RPI 608

Republicação - classificação IPC

#15.11

01/19/2010

RPI 2037

Carta-patente expirada

#21.1

11/14/1995

RPI 1302

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