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Official data from INPI

PROCESSO PARA CALCINAR MATÉRIA-PRIMA PULVERULENTA E APARELHO PARA REALIZAR O MESMO.

ConcedidaInvention Patent

Application data

Number

PI8304767

Type

Invention Patent

Filing

09/01/1983

Publication

04/10/1984

Progress at the INPI

  1. Filing09/01/83
  2. Publication04/10/84
  3. Examination08/14/84
  4. Allowance07/08/86
  5. Grant04/28/87
  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: 04/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

F.L. Smidth Comercio e Industria Ltda

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

3925/82 · 09/02/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/28/1987

RPI 862

Notificação para pagamento de retribuição

#13.1

11/04/1986

RPI 837

Deferimento

#9.1

07/08/1986

RPI 820

Exigência - art. 36 da LPI

#6.1

08/13/1985

RPI 773

Solicitação de exame técnico

#4.1

08/14/1984

RPI 721

Publicação do pedido de patente

#3.1

04/10/1984

RPI 703

Pedido de patente depositado

#2.1

11/01/1983

RPI 680

Carta-patente expirada

#21.1

Patente extinta em 01/09/98

07/01/2008

RPI 1956

20.4

04/02/1991

RPI 1061

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