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Official data from INPI

MÉTODO E DISPOSITIVO PARA MONITORAR CONTINUAMENTE A VISCOSIDADE DE UM FLUIDO,COM A TINTA QUE FLUI NUMA IMPRESSORA DE JATO CONTÍNUO

PublicadaInvention Patent

Application data

Number

PI8900783

Type

Invention Patent

Filing

02/17/1989

Publication

10/17/1989

Progress at the INPI

  1. Filing02/17/89
  2. Publication10/17/89
  3. Examination10/02/90
  4. Allowance05/31/94
  5. Grant12/27/94
  6. 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.

Talk to a specialist

Latest action published by the INPI: 10/17/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Willett International Limited

GB

Inventors

D. L. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8.803642 · 02/17/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/17/1989

RPI 991

Pedido de patente depositado

#2.1

04/11/1989

RPI 964

Carta-patente expirada

#21.1

Patente extinta em 17/02/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

12/27/1994

RPI 1256

Notificação para pagamento de retribuição

#13.1

10/04/1994

RPI 1244

Deferimento

#9.1

05/31/1994

RPI 1226

Exigência - art. 36 da LPI

#6.1

01/18/1994

RPI 1207

Solicitação de exame técnico

#4.1

10/02/1990

RPI 1035

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