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Official data from INPI

Sistema de soldadura ou de corte de plasma.

Em AnáliseInvention Patent

Application data

Number

PI8600731

Type

Invention Patent

Filing

02/21/1986

Publication

11/04/1986

Progress at the INPI

  1. Filing02/21/86
  2. Publication11/04/86
  3. Examination11/08/88
  4. Allowance02/09/93
  5. Grant07/27/93
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 11/08/1988. 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

G. M. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

85 02.554 · 02/22/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/08/1988

RPI 942

Publicação do pedido de patente

#3.1

11/04/1986

RPI 837

Pedido de patente depositado

#2.1

08/12/1986

RPI 825

Carta-patente expirada

#21.1

Patente extinta em 21/02/2001

07/22/2008

RPI 1959

Alteração de nome deferida

#25.4

01/06/1998

RPI 1411

Concessão da patente

#16.1

07/27/1993

RPI 1182

Republicação - classificação IPC

#15.11

06/01/1993

RPI 1174

Notificação para pagamento de retribuição

#13.1

05/25/1993

RPI 1173

Deferimento

#9.1

02/09/1993

RPI 1158

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