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Official data from INPI

MÉTODO E APARELHO PARA TRATAMENTO TÉRMICO DE MATERIAL PULVEROSO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9102915

Type

Invention Patent

Filing

07/10/1991

Publication

02/11/1992

Progress at the INPI

  1. Filing07/10/91
  2. Publication02/11/92
  3. Examination12/28/93
  4. Allowance11/19/96
  5. Grant08/26/97
  6. Expired06/04/13

The letters patent expired on 06/04/2013: 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: 06/04/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

F. L. Smidth Comércio e Industria Ltda

SP, BR

See this company's full portfolio

Inventors

B. J. (pessoa física)

DK

E. N. (pessoa física)

DK

Technical data

IPC Classification

Priority claims

DK

1669/90 · 07/11/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 10/07/2011

06/04/2013

RPI 2213

Concessão da patente

#16.1

08/26/1997

RPI 1395

Notificação para pagamento de retribuição

#13.1

05/13/1997

RPI 1380

Deferimento

#9.1

11/19/1996

RPI 1355

Exigência - art. 36 da LPI

#6.1

03/19/1996

RPI 1320

Solicitação de exame técnico

#4.1

12/28/1993

RPI 1204

Publicação do pedido de patente

#3.1

02/11/1992

RPI 1106

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