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Official data from INPI

TROCADOR DE CALOR

Arquivada/ExtintaInvention PatentPCT · DK1989000024

Application data

Number

PI8907305

Type

Invention Patent

Filing

02/09/1989

Publication

03/19/1991

PCT

DK1989000024

Progress at the INPI

  1. Filing02/09/89
  2. Publication03/19/91
  3. Examination10/08/91
  4. Allowance09/15/92
  5. Grant04/27/93
  6. Expired12/29/09

The letters patent expired on 12/29/2009: 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: 12/29/2009. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

F. L. Smidth & Co. A/S

DK

See this company's full portfolio

Inventors

O. A. (pessoa física)

DK

Technical data

IPC Classification

Priority claims

DK

1241/88 · 03/08/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 09/02/2004

12/29/2009

RPI 2034

Concessão da patente

#16.1

04/27/1993

RPI 1169

Notificação para pagamento de retribuição

#13.1

02/02/1993

RPI 1157

Deferimento

#9.1

09/15/1992

RPI 1137

Solicitação de exame técnico

#4.1

10/08/1991

RPI 1088

Notificação de entrada na fase nacional - PCT

#1.3

03/19/1991

RPI 1059

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