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Official data from INPI

RECIPIENTE DE OLEO COM CARTUCHO DE FILTRO PERMUTAVEL

ConcedidaInvention Patent
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Application data

Number

PI7806206

Type

Invention Patent

Filing

09/22/1977

Publication

-
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Progress at the INPI

  1. Filing09/22/77
  2. Publication
  3. Examination
  4. Allowance08/24/82
  5. Grant03/29/83
  6. Expired05/03/94

The letters patent expired on 05/03/1994: 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: 03/29/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Z. F. (pessoa física)

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Inventors

S. R. (pessoa física)

Technical data

IPC Classification

B01D 27/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/29/1983

RPI 649

Notificação para pagamento de retribuição

#13.1

01/11/1983

RPI 638

Deferimento

#9.1

08/24/1982

RPI 618

15.0

02/24/1982

RPI 592

Exigência - art. 36 da LPI

#6.1

01/26/1982

RPI 588

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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