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Official data from INPI

PENEIRA CENTRÍFUGA

Em AnáliseInvention Patent

Application data

Number

PI8204275

Type

Invention Patent

Filing

07/22/1982

Publication

07/19/1983

Progress at the INPI

  1. Filing07/22/82
  2. Publication07/19/83
  3. Examination08/28/84
  4. Allowance07/09/85
  5. Grant03/25/86
  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: 12/30/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Sulzer-Escher Wyss Ag

CH

Inventors

L. S. (pessoa física)

CH

Technical data

IPC Classification

Priority claims

CH

4 826/81-5 · 07/24/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

12/30/1986

RPI 845

Concessão da patente

#16.1

03/25/1986

RPI 805

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

08/28/1984

RPI 723

Publicação do pedido de patente

#3.1

07/19/1983

RPI 665

Pedido de patente depositado

#2.1

08/31/1982

RPI 619

Carta-patente expirada

#21.1

Patente extinta em 22/07/97

07/01/2008

RPI 1956

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