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Official data from INPI

INDICADOR DE RESTRICAO,PARA FILTROS DE FLUIDO

Em AnáliseInvention Patent

Application data

Number

PI7901210

Type

Invention Patent

Filing

02/24/1978

Publication

-

Progress at the INPI

  1. Filing02/24/78
  2. Publication
  3. Examination
  4. Allowance01/03/84
  5. Grant10/29/86
  6. Terminated06/14/88

The patent was granted on 10/29/1986 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DONALDSON CO INC

Inventors

N. M. (pessoa física)

O. T. (pessoa física)

O. M. (pessoa física)

Y. T. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/14/1988

RPI 921

Concessão da patente

#16.1

10/29/1986

RPI 836

110

06/17/1986

RPI 817

Recurso

#12.1

04/24/1984

RPI 705

Deferimento

#9.1

01/03/1984

RPI 689

Republicação - classificação IPC

#15.11

02/22/1983

RPI 644

Exigência - art. 36 da LPI

#6.1

11/16/1982

RPI 630

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