(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

APERFEIÇOAMENTO EM PROCESSO DE REFINO DE LIGAS METÁLICAS À BASE DE SILÍCIO

Em AnáliseInvention Patent

Application data

Number

PI8303605

Type

Invention Patent

Filing

07/05/1983

Publication

02/20/1985

Progress at the INPI

  1. Filing07/05/83
  2. Publication02/20/85
  3. Examination05/28/85
  4. Allowance03/23/93
  5. Grant09/28/93
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 06/27/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Liquid Carbonic Indústrias S.A.

RJ, BR

See this company's full portfolio

Inventors

P. D. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

120

06/27/1989

RPI 975

Petição de recurso

#12.2

06/07/1988

RPI 920

Indeferimento

#9.2

02/17/1988

RPI 904

Solicitação de exame técnico

#4.1

05/28/1985

RPI 762

Publicação do pedido de patente

#3.1

02/20/1985

RPI 748

Pedido de patente depositado

#2.1

08/16/1983

RPI 669

Carta-patente expirada

#21.1

Patente extinta em 05/07/98

07/01/2008

RPI 1956

Concessão da patente

#16.1

09/28/1993

RPI 1191

100

03/23/1993

RPI 1164

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.