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

ESPUMA CERÂMICAS

PublicadaInvention Patent

Application data

Number

PI8704767

Type

Invention Patent

Filing

09/15/1987

Publication

05/03/1988

Progress at the INPI

  1. Filing09/15/87
  2. Publication05/03/88
  3. Examination12/11/90
  4. Allowance06/20/95
  5. Grant03/26/96
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 05/03/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcan International Limited

CA

Lanxide Technology Company, LP

US

See this company's full portfolio

Inventors

E. P. (pessoa física)

US

S. P. (pessoa física)

CA

Technical data

Priority claims

US

089,376 · 08/26/1987

US

908116 · 09/16/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

05/03/1988

RPI 915

Pedido de patente depositado

#2.1

11/24/1987

RPI 892

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C04B 41/87; C04B 35/65; C04B 35/60.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

Patente extinta em 15/09/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

03/26/1996

RPI 1321

Notificação para pagamento de retribuição

#13.1

10/31/1995

RPI 1300

Deferimento

#9.1

06/20/1995

RPI 1281

Exigência - art. 36 da LPI

#6.1

08/16/1994

RPI 1237

Solicitação de exame técnico

#4.1

12/11/1990

RPI 1045

Patent monitoring

Track this patent in real time.

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