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

PROCESSO PARA BENEFICIAMENTO DE CARVOES TIPO LINHITICO,E PRODUTO ASSIM OBTIDO

ConcedidaInvention Patent

Application data

Number

PI7700105

Type

Invention Patent

Filing

01/12/1976

Publication

-

Progress at the INPI

  1. Filing01/12/76
  2. Publication
  3. Examination
  4. Allowance01/11/83
  5. Grant06/28/83
  6. Expired07/27/93

The letters patent expired on 07/27/1993: 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: 06/28/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

K. E. (pessoa física)

Inventors

K. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1983

RPI 662

Notificação para pagamento de retribuição

#13.1

05/24/1983

RPI 657

Deferimento

#9.1

01/11/1983

RPI 638

15.0

07/20/1982

RPI 613

Exigência - art. 36 da LPI

#6.1

06/29/1982

RPI 610

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

Patent monitoring

Track this patent in real time.

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