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Official data from INPI

PRENSA HIDRÁULICA PARA A PRODUÇÃO DE MATERIAIS CERÂMICOS E/OU REFRATÁRIOS.

ConcedidaInvention Patent

Application data

Number

PI8205951

Type

Invention Patent

Filing

10/11/1982

Publication

09/13/1983

Progress at the INPI

  1. Filing10/11/82
  2. Publication09/13/83
  3. Examination11/27/84
  4. Allowance07/09/85
  5. Grant12/31/85
  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: 12/31/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Welko Industriale S.p.A.

IT

Inventors

W. U. (pessoa física)

Technical data

IPC Classification

Priority claims

IT

24444A/81 · 10/12/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

Solicitação de exame técnico

#4.1

11/27/1984

RPI 736

Publicação do pedido de patente

#3.1

09/13/1983

RPI 673

Pedido de patente depositado

#2.1

12/07/1982

RPI 633

Carta-patente expirada

#21.1

Patente extinta em 11/10/97

07/01/2008

RPI 1956

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