Official data from INPI

BOCAL COM FENDA ANULAR EM UMA BASE.

ConcedidaInvention Patent

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Application data

Number

PI8304638

Type

Invention Patent

Filing

08/26/1983

Publication

04/10/1984

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Progress at the INPI

Filing08/26/83
Publication04/10/84
Examination08/13/85
Allowance07/08/86
Grant08/25/87
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.

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Latest action published by the INPI: 08/25/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Sulzer-Escher Wyss Ag

Inventors

E. B. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Priority claims

5134/82 · 08/30/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/25/1987

RPI 879

14.4

03/10/1987

RPI 855

Notificação para pagamento de retribuição

#13.1

11/04/1986

RPI 837

Deferimento

#9.1

07/08/1986

RPI 820

Solicitação de exame técnico

#4.1

08/13/1985

RPI 773

Publicação do pedido de patente

#3.1

04/10/1984

RPI 703

Pedido de patente depositado

#2.1

11/01/1983

RPI 680

Carta-patente expirada

#21.1

Patente extinta em 26/08/98

07/01/2008

RPI 1956

From the same holder

CENTRÍFUGA DE CISALHAMENTO PENEIRA CENTRÍFUGA

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