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Official data from INPI

PURIFICADOR DE AR DESCARTÁVEL.

ConcedidaInvention PatentPCT · US1982001001

Application data

Number

PI8207796

Type

Invention Patent

Filing

07/23/1982

Publication

07/19/1983

PCT

US1982001001

Progress at the INPI

  1. Filing07/23/82
  2. Publication07/19/83
  3. Examination03/19/85
  4. Allowance12/03/85
  5. Grant06/24/86
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 06/24/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Donaldson Company, Inc.

US

See this company's full portfolio

Inventors

A. [. (pessoa física)

B. [. (pessoa física)

S. [. (pessoa física)

S. [. (pessoa física)

Pessoa física

Technical data

IPC Classification

Priority claims

US

286.475 · 07/24/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/24/1986

RPI 818

Notificação para pagamento de retribuição

#13.1

04/22/1986

RPI 809

Deferimento

#9.1

12/03/1985

RPI 789

Solicitação de exame técnico

#4.1

03/19/1985

RPI 752

Retificação da notificação da fase nacional - PCT

#1.3.1

08/30/1983

RPI 671

Notificação de entrada na fase nacional - PCT

#1.3

07/19/1983

RPI 665

Carta-patente expirada

#21.1

Patente extinta em 23/07/97

07/01/2008

RPI 1956

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