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Official data from INPI

Cabeça de corte com conduto axial de oxigênio de corte

Arquivada/ExtintaInvention Patent

Application data

Number

PI9002224

Type

Invention Patent

Filing

05/11/1990

Publication

08/13/1991

Progress at the INPI

  1. Filing05/11/90
  2. Publication08/13/91
  3. Examination10/19/93
  4. Allowance03/07/95
  5. Grant09/26/95
  6. Expired05/18/10

The letters patent expired on 05/18/2010: 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: 05/18/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Air Liquide Brasil S/A

SP, BR

See this company's full portfolio

Inventors

D. L. (pessoa física)

FR

M. A. (pessoa física)

FR

R. S. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

89 06247 · 05/12/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 11/05/2005

05/18/2010

RPI 2054

Alteração de nome deferida

#25.4

11/18/1997

RPI 1407

Concessão da patente

#16.1

09/26/1995

RPI 1295

Deferimento

#9.1

03/07/1995

RPI 1266

Solicitação de exame técnico

#4.1

10/19/1993

RPI 1194

Publicação do pedido de patente

#3.1

08/13/1991

RPI 1080

Pedido de patente depositado

#2.1

09/25/1990

RPI 1034

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