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

APERFEIÇOAMENTOS RELATIVOS AO REVESTIMENTO DE TUBULAÇÕES E PASSAGENS

ConcedidaInvention Patent

Application data

Number

PI8500018

Type

Invention Patent

Filing

01/04/1985

Publication

08/13/1985

Progress at the INPI

  1. Filing01/04/85
  2. Publication08/13/85
  3. Examination09/22/87
  4. Allowance12/20/88
  5. Grant09/26/89
  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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Insituform Holdings Limited

GB

Inventors

E. W. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

84.00.233 · 01/05/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

04/25/1989

RPI 966

Deferimento

#9.1

12/20/1988

RPI 948

Exigência - art. 36 da LPI

#6.1

07/26/1988

RPI 927

Solicitação de exame técnico

#4.1

09/22/1987

RPI 883

Publicação do pedido de patente

#3.1

08/13/1985

RPI 773

Pedido de patente depositado

#2.1

04/02/1985

RPI 754

Carta-patente expirada

#21.1

Patente extinta em 04/01/2000

07/15/2008

RPI 1958

Pedido de licença compulsória

#20.1

10/04/1994

RPI 1244

Patent monitoring

Track this patent in real time.

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