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Official data from INPI

APARELHO PARA QUEIMAR MATÉRIA-PRIMA PULVERULENTA.

ConcedidaInvention Patent

Application data

Number

PI8304599

Type

Invention Patent

Filing

08/25/1983

Publication

04/24/1984

Progress at the INPI

  1. Filing08/25/83
  2. Publication04/24/84
  3. Examination08/07/84
  4. Allowance12/17/85
  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

F. L. Smidth S/A. Comercio e Industria

SP, BR

F.L. Smidth, S.A., Comércio e Indústria.

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Inventors

E. B. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Priority claims

DK

3926/82 · 09/02/1982

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

12/17/1985

RPI 791

Exigência - art. 36 da LPI

#6.1

04/30/1985

RPI 758

Solicitação de exame técnico

#4.1

08/07/1984

RPI 720

Publicação do pedido de patente

#3.1

04/24/1984

RPI 705

Pedido de patente depositado

#2.1

11/01/1983

RPI 680

Carta-patente expirada

#21.1

Patente extinta em 25/08/98

07/01/2008

RPI 1956

20.4

04/02/1991

RPI 1061

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