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

BROCA DE PERFURAÇÃO E CONJUNTO DE PERNA E MUNHÃO DE MANCAL.

ConcedidaInvention Patent
Talk to an expert

Application data

Number

PI8102044

Type

Invention Patent

Filing

04/03/1981

Publication

11/09/1982
View on INPI

Progress at the INPI

  1. Filing04/03/81
  2. Publication11/09/82
  3. Examination08/23/83
  4. Allowance03/25/86
  5. Grant09/30/86
  6. Expired10/01/96

The letters patent expired on 10/01/1996: 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: 09/30/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CBV Indústria Mêcanica S.A.

RJ, BR

See this company's full portfolio

Inventors

M. D. (pessoa física)

M. M. (pessoa física)

Technical data

IPC Classification

E21B 10/22

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/30/1986

RPI 832

Notificação para pagamento de retribuição

#13.1

07/15/1986

RPI 821

Deferimento

#9.1

03/25/1986

RPI 805

Exigência - art. 36 da LPI

#6.1

05/21/1985

RPI 761

Exigência - art. 36 da LPI

#6.1

10/02/1984

RPI 728

Solicitação de exame técnico

#4.1

08/23/1983

RPI 670

Publicação do pedido de patente

#3.1

11/09/1982

RPI 629

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

Related

Patent monitoring

Track this patent in real time.

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