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Official data from INPI

APARELHO PARA GERACAO DE UM SINAL DE RADIODIFUSAO ESTEREO COMPOSTO DE AMPLITUDE MODULADA - (AM)

ConcedidaInvention Patent

Application data

Number

PI8107414

Type

Invention Patent

Filing

11/16/1981

Publication

06/21/1983

Progress at the INPI

  1. Filing11/16/81
  2. Publication06/21/83
  3. Examination10/11/83
  4. Allowance05/14/85
  5. Grant12/31/85
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 12/31/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

KAHN LEONARD R [US]

Inventors

K. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

09/03/1985

RPI 776

Deferimento

#9.1

05/14/1985

RPI 760

Exigência - art. 36 da LPI

#6.1

08/21/1984

RPI 722

Solicitação de exame técnico

#4.1

10/11/1983

RPI 677

Publicação do pedido de patente

#3.1

06/21/1983

RPI 661

Pedido de patente depositado

#2.1

12/29/1981

RPI 584

Carta-patente expirada

#21.1

Patente extinta em 16/11/96

08/19/2008

RPI 1963

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