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

FERRAMENTA E PROCESSO PARA A INSPECAO DE REVESTIMENTO COM CORRECAO DE PERMEABILIDADE MAGNETICA

ConcedidaInvention Patent

Application data

Number

PI8002602

Type

Invention Patent

Filing

04/28/1980

Publication

12/15/1981

Progress at the INPI

  1. Filing04/28/80
  2. Publication12/15/81
  3. Examination12/14/82
  4. Allowance08/07/84
  5. Grant02/26/85
  6. Expired06/13/95

The letters patent expired on 06/13/1995: 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: 02/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SCHLUMBERGER SURENCO SA

See this company's full portfolio

Inventors

S. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/26/1985

RPI 749

Notificação para pagamento de retribuição

#13.1

12/11/1984

RPI 738

Deferimento

#9.1

08/07/1984

RPI 720

Exigência - art. 36 da LPI

#6.1

01/24/1984

RPI 692

Exigência - art. 36 da LPI

#6.1

08/02/1983

RPI 667

Solicitação de exame técnico

#4.1

12/14/1982

RPI 634

Publicação do pedido de patente

#3.1

12/15/1981

RPI 582

Republicação - classificação IPC

#15.11

12/15/2009

RPI 2032

Carta-patente expirada

#21.1

06/13/1995

RPI 1280

Related

Same category

Patent monitoring

Track this patent in real time.

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