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Official data from INPI

DISPOSITIVO PARA ACIONAMENTO DA TAMPA DO TUBO DE ASCENSÃO DE FORNOS DE COQUE

Prazo de SigiloUtility Model

Application data

Number

MU6901938

Type

Utility Model

Filing

09/20/1989

Publication

07/09/1991

Progress at the INPI

  1. Filing09/20/89
  2. Publication07/09/91
  3. Examination12/28/93
  4. Allowance11/01/94
  5. Grant07/25/95
  6. Expired11/20/01

The letters patent expired on 11/20/2001: 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: 12/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. Dedini S/A Metalúrgica

SP, BR

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Inventors

O. M. (pessoa física)

BR

S. H. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

12/05/1989

RPI 998

Carta-patente expirada

#21.1

Patente extinta em 20/09/1999 conforme o disposto no artigo 24 da Lei 5772/71 (CPI).

11/20/2001

RPI 1611

Concessão da patente

#16.1

07/25/1995

RPI 1286

Notificação para pagamento de retribuição

#13.1

03/07/1995

RPI 1266

Deferimento

#9.1

11/01/1994

RPI 1248

Solicitação de exame técnico

#4.1

12/28/1993

RPI 1204

Publicação do pedido de patente

#3.1

07/09/1991

RPI 1075

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