Official data from INPI

REGISTRO DE SEGURANÇA PARA GÁS

Prazo de SigiloInvention Patent

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Application data

Number

PI8802531

Type

Invention Patent

Filing

05/24/1988

Publication

01/09/1990

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Progress at the INPI

Filing05/24/88
Publication01/09/90
Examination08/07/90
Allowance06/18/91
Grant05/26/92
Expired09/02/08

The letters patent expired on 09/02/2008: 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: 10/25/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Indústria Metalúrgica Armentano Ltda., firma brasileira, industrial e comercial

SP, BR

Inventors

J. A. (pessoa física)

Technical data

IPC Classification

F16K 1/00 F24C 3/12

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

10/25/1988

RPI 940

Carta-patente expirada

#21.1

Patente extinta em 24/05/2003

09/02/2008

RPI 1965

320

09/20/1994

RPI 1242

300

02/08/1994

RPI 1210

201

10/05/1993

RPI 1192

Pedido de licença voluntária

#17.1

02/16/1993

RPI 1159

Concessão da patente

#16.1

05/26/1992

RPI 1121

Notificação para pagamento de retribuição

#13.1

10/15/1991

RPI 1089

Deferimento

#9.1

06/18/1991

RPI 1072

Solicitação de exame técnico

#4.1

08/07/1990

RPI 1027

Publicação do pedido de patente

#3.1