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Official data from INPI

SUPORTE PARA ROLOS GIRATORIOS QUE FORMAM O PLANO DE AVANCO DOS MATERIAIS CERAMICOS NOS FORNOS DE COZIMENTO

ConcedidaInvention Patent

Application data

Number

PI7806621

Type

Invention Patent

Filing

07/10/1978

Publication

-

Progress at the INPI

  1. Filing07/10/78
  2. Publication
  3. Examination
  4. Allowance07/12/83
  5. Grant10/30/84
  6. Expired05/03/94

The letters patent expired on 05/03/1994: 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: 10/30/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

WELKO IND SPA

Inventors

M. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/30/1984

RPI 732

110

06/26/1984

RPI 714

Recurso

#12.1

10/18/1983

RPI 678

Deferimento

#9.1

07/12/1983

RPI 664

Exigência - art. 36 da LPI

#6.1

10/19/1982

RPI 626

14.1

04/06/1982

RPI 598

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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