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

RETENÇÃO DE ISOLAMENTO DE TETOS

ConcedidaInvention Patent

Application data

Number

PI8401108

Type

Invention Patent

Filing

03/02/1984

Publication

10/16/1984

Progress at the INPI

  1. Filing03/02/84
  2. Publication10/16/84
  3. Examination10/21/86
  4. Allowance12/27/88
  5. Grant10/24/89
  6. Terminated02/25/92

The patent was granted on 10/24/1989 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

M. B. (pessoa física)

CH

Technical data

IPC Classification

Priority claims

US

473,903 · 03/10/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/24/1989

RPI 992

Notificação para pagamento de retribuição

#13.1

05/02/1989

RPI 967

Deferimento

#9.1

12/27/1988

RPI 949

Exigência - art. 36 da LPI

#6.1

05/17/1988

RPI 917

6.2

09/22/1987

RPI 883

Solicitação de exame técnico

#4.1

10/21/1986

RPI 835

Publicação do pedido de patente

#3.1

10/16/1984

RPI 730

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: E04B 5/55; E04F 13/18.

03/27/2018

RPI 2464

Anuidade - prazo legal encerrado

#18.2

02/25/1992

RPI 1108

Patent monitoring

Track this patent in real time.

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