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Official data from INPI

ESTRUTURA DE SUSTENTAÇÃO PARA FORNOS DE ROLOS.

ConcedidaInvention Patent

Application data

Number

PI7904333

Type

Invention Patent

Filing

07/09/1979

Publication

-

Progress at the INPI

  1. Filing07/09/79
  2. Publication
  3. Examination07/05/83
  4. Allowance10/06/87
  5. Grant05/31/88
  6. Expired04/18/95

The letters patent expired on 04/18/1995: 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: 05/31/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Welko Industriale S.p.A.

IT

Inventors

M. E. (pessoa física)

Technical data

IPC Classification

Priority claims

IT

25486 A/78 · 07/10/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1988

RPI 919

Notificação para pagamento de retribuição

#13.1

02/09/1988

RPI 903

Deferimento

#9.1

10/06/1987

RPI 885

Exigência - art. 36 da LPI

#6.1

05/19/1987

RPI 865

Conhecimento de parecer técnico

#7.1

03/27/1984

RPI 701

Pedido de certificado de adição de invenção

#5.1

11/16/1983

RPI 682

Solicitação de exame técnico

#4.1

07/05/1983

RPI 663

14.1

02/08/1983

RPI 642

14.2

09/08/1982

RPI 620

Carta-patente expirada

#21.1

04/18/1995

RPI 1272

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