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Official data from INPI

VÁLVULA DE SEGURANÇA INIBIDORA DE CHAMA PARA PILHA SECUNDÁRIA

Em AnáliseUtility Model

Application data

Number

MU6701497

Type

Utility Model

Filing

07/28/1987

Publication

02/08/1989

Progress at the INPI

  1. Filing07/28/87
  2. Publication02/08/89
  3. Examination07/04/89
  4. Allowance02/05/91
  5. Grant09/24/91
  6. Expired09/18/01

The letters patent expired on 09/18/2001: 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: 07/04/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Acumuladores Narvit Ltda

SP, BR

Inventors

O. N. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

07/04/1989

RPI 976

Publicação do pedido de patente

#3.1

02/08/1989

RPI 955

Pedido de patente depositado

#2.1

12/08/1987

RPI 894

Carta-patente expirada

#21.1

Patente extinta em 28/07/97 conforme o disposto no artigo 24 da Lei 5772/71 (CPI).

09/18/2001

RPI 1602

Concessão da patente

#16.1

09/24/1991

RPI 1086

Notificação para pagamento de retribuição

#13.1

05/21/1991

RPI 1068

Deferimento

#9.1

02/05/1991

RPI 1053

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