Official data from INPI

APARELHO DE SECAGEM DE AR

Prazo de SigiloInvention Patent

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Application data

Number

PI8900827

Type

Invention Patent

Filing

02/23/1989

Publication

10/02/1990

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Progress at the INPI

Filing02/23/89
Publication10/02/90
Examination10/13/92
Allowance01/09/96
Grant11/26/96
Expired12/15/09

The letters patent expired on 12/15/2009: 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: 04/11/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Domnick Hunter Filters Limited

Domnick Hunter Limited

Inventors

C. B. (pessoa física)

R. F. (pessoa física)

Technical data

IPC Classification

B01D 53/26

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

04/11/1989

RPI 964

Carta-patente expirada

#21.1

Patente extinta em 23/02/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

11/26/1996

RPI 1356

Notificação para pagamento de retribuição

#13.1

07/02/1996

RPI 1335

Deferimento

#9.1

01/09/1996

RPI 1310

Exigência - art. 36 da LPI

#6.1

02/07/1995

RPI 1262

14.4

09/21/1993

RPI 1190

20.12

09/21/1993

RPI 1190

20.4

07/27/1993

RPI 1182

14.6

04/20/1993

RPI 1168

Solicitação de exame técnico

#4.1

10/13/1992

RPI 1141

Publicação do pedido de patente

#3.1