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Official data from INPI

COBERTURA RÍGIDA RETRÁTIL PARA VAGÕES

Prazo de SigiloUtility Model

Application data

Number

MU6901289

Type

Utility Model

Filing

07/11/1989

Publication

05/14/1991

Progress at the INPI

  1. Filing07/11/89
  2. Publication05/14/91
  3. Examination09/24/91
  4. Allowance06/14/94
  5. Grant11/29/94
  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: 11/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica Nacional - CSN

RJ, BR

Instituto de Pesquisas Tecnológicas de São Paulo S/A - IPT

SP, BR

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Inventors

E. P. (pessoa física)

BR

F. S. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

11/07/1989

RPI 994

Carta-patente expirada

#21.1

Patente extinta em 11/07/1999 conforme o disposto no artigo 24 da Lei 5772 (CPI).

11/20/2001

RPI 1611

Concessão da patente

#16.1

11/29/1994

RPI 1252

Notificação para pagamento de retribuição

#13.1

08/23/1994

RPI 1238

100

06/14/1994

RPI 1228

Petição de recurso

#12.2

02/16/1994

RPI 1211

Indeferimento

#9.2

09/21/1993

RPI 1190

15.7

05/18/1993

RPI 1172

Solicitação de exame técnico

#4.1

09/24/1991

RPI 1086

Publicação do pedido de patente

#3.1

05/14/1991

RPI 1067

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