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

COMPOSICAO EM PO DE CARBONETO DE SILICIO E PROCESSO PARA FORMACAO DE UM CORPO DE CARBONETO DE SILICIO

Em AnáliseInvention Patent

Application data

Number

PI7708628

Type

Invention Patent

Filing

12/27/1976

Publication

-

Progress at the INPI

  1. Filing12/27/76
  2. Publication
  3. Examination
  4. Allowance10/25/83
  5. Grant04/24/84
  6. Expired07/06/93

The letters patent expired on 07/06/1993: 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: 05/27/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CARBORUNDUM CO

See this company's full portfolio

Inventors

C. J. (pessoa física)

L. H. (pessoa física)

M. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

05/27/1986

RPI 814

Concessão da patente

#16.1

04/24/1984

RPI 705

Notificação para pagamento de retribuição

#13.1

02/07/1984

RPI 694

Deferimento

#9.1

10/25/1983

RPI 679

Exigência - art. 36 da LPI

#6.1

02/02/1982

RPI 589

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

Patent monitoring

Track this patent in real time.

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