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Official data from INPI

APARELHO PURIFICADOR DE AR

ConcedidaInvention Patent

Application data

Number

PI7705797

Type

Invention Patent

Filing

09/03/1976

Publication

-

Progress at the INPI

  1. Filing09/03/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant08/30/83
  6. Terminated01/21/92

The patent was granted on 08/30/1983 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: 08/30/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DONALDSON CO INC

Inventors

A. E. (pessoa física)

S. F. (pessoa física)

W. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/30/1983

RPI 671

102

05/03/1983

RPI 654

Pedido de recurso

#12.3

09/08/1982

RPI 620

11.3

05/18/1982

RPI 604

Anuidade - prazo legal encerrado

#18.2

01/21/1992

RPI 1103

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