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Official data from INPI

APERFEIÇOAMENTOS EM REGISTRO PARA GÁS

Arquivada/ExtintaInvention Patent

Application data

Number

PI9000074

Type

Invention Patent

Filing

01/04/1990

Publication

10/08/1991

Progress at the INPI

  1. Filing01/04/90
  2. Publication10/08/91
  3. Examination06/15/93
  4. Allowance05/31/94
  5. Grant08/29/95
  6. Expired05/11/10

The letters patent expired on 05/11/2010: 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: 05/11/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Delta Metal Ltda

SP, BR

F. G. (pessoa física)

SP, BR

See this company's full portfolio

Inventors

F. G. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 04/01/2005

05/11/2010

RPI 2053

Concessão da patente

#16.1

08/29/1995

RPI 1291

110

05/16/1995

RPI 1276

Recurso

#12.1

10/04/1994

RPI 1244

Deferimento

#9.1

05/31/1994

RPI 1226

Solicitação de exame técnico

#4.1

06/15/1993

RPI 1176

14.1

03/09/1993

RPI 1162

Publicação do pedido de patente

#3.1

10/08/1991

RPI 1088

Pedido de patente depositado

#2.1

05/15/1990

RPI 1018

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