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Official data from INPI

filtro eletrostático.

ConcedidaInvention Patent

Application data

Number

PI7905191

Type

Invention Patent

Filing

09/11/1979

Publication

-

Progress at the INPI

  1. Filing09/11/79
  2. Publication
  3. Examination
  4. Allowance11/30/82
  5. Grant06/28/83
  6. Expired04/18/95

The letters patent expired on 04/18/1995: 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: 06/28/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Apparatebau Rothemule Brandt & Kritler

Inventors

C. O. (pessoa física)

Technical data

IPC Classification

Priority claims

DE

P 28 39 542.8 · 09/12/1978

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

05/10/1983

RPI 655

Deferimento

#9.1

11/30/1982

RPI 632

Exigência - art. 36 da LPI

#6.1

04/27/1982

RPI 601

Carta-patente expirada

#21.1

04/18/1995

RPI 1272

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