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Official data from INPI

BICO DE SOLDAGEM OU DE CORTE A PLASMA

Em ExigênciaInvention Patent

Application data

Number

PI8501589

Type

Invention Patent

Filing

04/03/1985

Publication

12/03/1985

Progress at the INPI

  1. Filing04/03/85
  2. Publication12/03/85
  3. Examination12/22/87
  4. Allowance10/16/90
  5. Grant05/28/91
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 05/30/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

L'Air Liquide-Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude

FR

See this company's full portfolio

Inventors

E. D. (pessoa física)

FR

G. M. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

84.05.286 · 04/04/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

6.2

05/30/1989

RPI 971

Solicitação de exame técnico

#4.1

12/22/1987

RPI 896

Publicação do pedido de patente

#3.1

12/03/1985

RPI 789

Pedido de patente depositado

#2.1

07/02/1985

RPI 767

Carta-patente expirada

#21.1

Patente extinta em 03/04/2000

07/15/2008

RPI 1958

Republicação - classificação IPC

#15.11

05/28/1991

RPI 1069

Concessão da patente

#16.1

05/28/1991

RPI 1069

Notificação para pagamento de retribuição

#13.1

01/29/1991

RPI 1052

Deferimento

#9.1

10/16/1990

RPI 1037

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