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Official data from INPI

APARELHO PARA FILTRAR PARTÍCULAS NUM GÁS A TEMPERATURA ELEVADA.

ConcedidaInvention Patent

Application data

Number

PI8105824

Type

Invention Patent

Filing

09/11/1981

Publication

09/08/1982

Progress at the INPI

  1. Filing09/11/81
  2. Publication09/08/82
  3. Examination10/30/84
  4. Allowance09/30/86
  5. Grant06/30/87
  6. Terminated09/25/90

The patent was granted on 06/30/1987 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: 06/30/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. C. (pessoa física)

US

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Inventors

C. F. (pessoa física)

Technical data

IPC Classification

Priority claims

US

230.142 · 01/30/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/30/1987

RPI 871

Deferimento

#9.1

09/30/1986

RPI 832

8.1

07/22/1986

RPI 822

14.1

08/27/1985

RPI 775

Exigência - art. 36 da LPI

#6.1

04/16/1985

RPI 756

Solicitação de exame técnico

#4.1

10/30/1984

RPI 732

Publicação do pedido de patente

#3.1

09/08/1982

RPI 620

Pedido de patente depositado

#2.1

10/27/1981

RPI 575

Anuidade - prazo legal encerrado

#18.2

09/25/1990

RPI 1034

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