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

ENGATE FERROVIÁRIO

Em AnáliseInvention Patent

Application data

Number

PI8601640

Type

Invention Patent

Filing

04/11/1986

Publication

12/16/1986

Progress at the INPI

  1. Filing04/11/86
  2. Publication12/16/86
  3. Examination03/31/87
  4. Allowance09/25/90
  5. Grant03/26/91
  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: 03/31/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Amsted Industries Incorporated

US

See this company's full portfolio

Inventors

R. A. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

722.804 · 04/12/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

03/31/1987

RPI 858

Publicação do pedido de patente

#3.1

12/16/1986

RPI 843

Pedido de patente depositado

#2.1

10/29/1986

RPI 836

Carta-patente expirada

#21.1

Patente extinta em 11/04/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

03/26/1991

RPI 1060

Notificação para pagamento de retribuição

#13.1

01/08/1991

RPI 1049

Deferimento

#9.1

09/25/1990

RPI 1034

Exigência - art. 36 da LPI

#6.1

05/29/1990

RPI 1020

Patent monitoring

Track this patent in real time.

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