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Official data from INPI

CONJUNTO COMPACTO DE FILTRO DE POEIRA.

ConcedidaInvention PatentPCT · US1982001067

Application data

Number

PI8207869

Type

Invention Patent

Filing

08/12/1982

Publication

08/30/1983

PCT

US1982001067

Progress at the INPI

  1. Filing08/12/82
  2. Publication08/30/83
  3. Examination12/20/83
  4. Allowance07/30/85
  5. Grant02/04/86
  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: 02/04/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Donaldson Company, Inc.

US

See this company's full portfolio

Inventors

S. [. (pessoa física)

Technical data

IPC Classification

Priority claims

US

307.166 · 09/30/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/04/1986

RPI 798

Notificação para pagamento de retribuição

#13.1

11/26/1985

RPI 788

Deferimento

#9.1

07/30/1985

RPI 771

Exigência - art. 36 da LPI

#6.1

12/04/1984

RPI 737

Solicitação de exame técnico

#4.1

12/20/1983

RPI 687

Notificação de entrada na fase nacional - PCT

#1.3

08/30/1983

RPI 671

Carta-patente expirada

#21.1

Patente extinta em 12/08/97

07/01/2008

RPI 1956

18.8

06/16/1992

RPI 1124

Anuidade - prazo legal encerrado

#18.2

02/11/1992

RPI 1106

18.8

11/20/1990

RPI 1042

Anuidade - prazo legal encerrado

#18.2

06/26/1990

RPI 1024

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