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Official data from INPI

EQUIPAMENTO PARA O CONTROLE DE EMISSAO DE PARTICULAS(POEIRA)

ConcedidaInvention Patent

Application data

Number

PI7800147

Type

Invention Patent

Filing

01/11/1978

Publication

-

Progress at the INPI

  1. Filing01/11/78
  2. Publication
  3. Examination
  4. Allowance12/28/82
  5. Grant06/28/83
  6. Expired11/30/93

The letters patent expired on 11/30/1993: 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: 06/28/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

R. W. (pessoa física)

Inventors

R. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1983

RPI 662

Deferimento

#9.1

12/28/1982

RPI 636

Exigência - art. 36 da LPI

#6.1

07/13/1982

RPI 612

Exigência - art. 36 da LPI

#6.1

01/12/1982

RPI 586

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

18.3

12/22/1992

RPI 1151

18.1

10/29/1991

RPI 1091

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