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Official data from INPI

GUIA DE ONDAS DIELETRICO E PROCESSO DE PROPAGACAO DE ONDAS ELETROMAGNETICAS POLARIZADAS AO LONGO DO MESMO

ConcedidaInvention Patent

Application data

Number

PI8003798

Type

Invention Patent

Filing

06/18/1980

Publication

-

Progress at the INPI

  1. Filing06/18/80
  2. Publication
  3. Examination
  4. Allowance12/21/82
  5. Grant06/28/83
  6. Expired09/12/95

The letters patent expired on 09/12/1995: 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: 06/28/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. C. (pessoa física)

US

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Inventors

D. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1983

RPI 662

Notificação para pagamento de retribuição

#13.1

05/24/1983

RPI 657

Deferimento

#9.1

12/21/1982

RPI 635

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: G02B 5/172; H04B 9/00.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

09/12/1995

RPI 1293

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