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

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI8101026

Type

Invention Patent

Filing

02/20/1981

Publication

-

Progress at the INPI

  1. Filing02/20/81
  2. Publication
  3. Examination
  4. Allowance01/02/85
  5. Grant08/27/85
  6. Expired03/26/96

The letters patent expired on 03/26/1996: 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: 01/31/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Metalurgica Detroit S/A.

SP, BR

See this company's full portfolio

Inventors

P. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

18.8

01/31/1989

RPI 954

Anuidade - prazo legal encerrado

#18.2

11/16/1988

RPI 943

Pedido de licença compulsória

#20.1

05/27/1986

RPI 814

Concessão da patente

#16.1

08/27/1985

RPI 775

Notificação para pagamento de retribuição

#13.1

04/23/1985

RPI 757

Deferimento

#9.1

01/02/1985

RPI 741

Republicação - classificação IPC

#15.11

11/27/1984

RPI 736

Exigência - art. 36 da LPI

#6.1

07/17/1984

RPI 717

Carta-patente expirada

#21.1

03/26/1996

RPI 1321

Patent monitoring

Track this patent in real time.

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