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Official data from INPI

PROCESSO DE FUSÃO E DE REFINO DE UMA CARGA

Arquivada/ExtintaInvention Patent
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Application data

Number

PI9101033

Type

Invention Patent

Filing

03/15/1991

Publication

11/05/1991
View on INPI

Progress at the INPI

  1. Filing03/15/91
  2. Publication11/05/91
  3. Examination01/04/94
  4. Allowance08/19/97
  5. Grant12/29/98
  6. Expired05/28/13

The letters patent expired on 05/28/2013: 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: 05/28/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Air Liquide Brasil S.A.

SP, BR

Oxigênio do Brasil S/A

SP, BR

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Inventors

B. G. (pessoa física)

FR

D. J. (pessoa física)

FR

L. P. (pessoa física)

FR

Technical data

IPC Classification

C03B 5/16C03B 5/225

Priority claims

FR

90 03 373 · 03/16/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 15/03/2011

05/28/2013

RPI 2212

Concessão da patente

#16.1

12/29/1998

RPI 1460

Alteração de nome deferida

#25.4

10/28/1997

RPI 1404

Republicação - classificação IPC

#15.11

08/19/1997

RPI 1394

Deferimento

#9.1

08/19/1997

RPI 1394

Solicitação de exame técnico

#4.1

01/04/1994

RPI 1205

Publicação do pedido de patente

#3.1

11/05/1991

RPI 1092

Pedido de patente depositado

#2.1

09/03/1991

RPI 1083

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