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

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI8104495

Type

Invention Patent

Filing

07/14/1981

Publication

02/22/1983

Progress at the INPI

  1. Filing07/14/81
  2. Publication02/22/83
  3. Examination11/27/84
  4. Allowance07/09/85
  5. Grant03/25/86
  6. Expired10/08/96

The letters patent expired on 10/08/1996: 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Duratex Sociedade Anônima

SP, BR

See this company's full portfolio

Inventors

L. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

320

09/26/1989

RPI 988

300

02/09/1988

RPI 903

201

08/18/1987

RPI 878

Pedido de licença voluntária

#17.1

03/31/1987

RPI 858

Pedido de licença compulsória

#20.1

11/04/1986

RPI 837

Concessão da patente

#16.1

03/25/1986

RPI 805

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

Solicitação de exame técnico

#4.1

11/27/1984

RPI 736

Publicação do pedido de patente

#3.1

02/22/1983

RPI 644

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

Patent monitoring

Track this patent in real time.

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