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Official data from INPI

CONVERSOR PARA CONVERTER UM SINAL MODULADO DELTA SIGMA EM UM SINAL MODULADO DE CODIGO DE PULSOS

ConcedidaInvention Patent

Application data

Number

PI7801010

Type

Invention Patent

Filing

02/20/1978

Publication

-

Progress at the INPI

  1. Filing02/20/78
  2. Publication
  3. Examination
  4. Allowance07/27/82
  5. Grant02/22/83
  6. Expired11/30/93

The letters patent expired on 11/30/1993: 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: 02/22/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

P. O. (pessoa física)

Inventors

E. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/22/1983

RPI 644

Notificação para pagamento de retribuição

#13.1

12/14/1982

RPI 634

Deferimento

#9.1

07/27/1982

RPI 614

15.0

02/16/1982

RPI 591

Exigência - art. 36 da LPI

#6.1

01/05/1982

RPI 585

Republicação - classificação IPC

#15.11

01/26/2010

RPI 2038

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

20.11

05/01/1990

RPI 1016

Pedido de licença compulsória

#20.1

03/20/1990

RPI 1010

20.7

03/13/1990

RPI 1009

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