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Official data from INPI

CILINDRO DE CALANDRAGEM COM COMPENSAÇÃO DE FLEXÃO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9003457

Type

Invention Patent

Filing

07/17/1990

Publication

08/27/1991

Progress at the INPI

  1. Filing07/17/90
  2. Publication08/27/91
  3. Examination09/21/93
  4. Allowance05/31/94
  5. Grant12/27/94
  6. Expired05/25/10

The letters patent expired on 05/25/2010: 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: 05/25/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Solvay & Cie

BE

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Inventors

J. B. (pessoa física)

BE

Technical data

IPC Classification

Priority claims

BE

08900777 · 07/17/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 17/07/2005

05/25/2010

RPI 2055

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

Solicitação de exame técnico

#4.1

09/21/1993

RPI 1190

Publicação do pedido de patente

#3.1

08/27/1991

RPI 1082

Pedido de patente depositado

#2.1

01/22/1991

RPI 1051

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